Your mission is to rescue the beautiful princessfrom the evil lord.

To rescue heryou must complete 5 challenges.

To complete a challengeyou must answer 2 questions correctly.

If you get an answer wrong,you must try another question.But be careful, if you get too many wrong answersyou will lose the princess forever!!

To begin your mission press the button

Your mission is to rescue the beautiful princessfrom the evil lord.

To rescue heryou must complete 5 challenges.

To complete a challengeyou must answer 2 questions correctly.

If you get an answer wrong,you must try another question.But be careful, if you get too many wrong answersyou will lose the princess forever!!

To begin your mission press the button

To start press the buttonTo start press the button

The princess is being held captivein a castle surrounded by a thick forest.

Your first challengeis to find your way through the forest.

The princess is being held captivein a castle surrounded by a thick forest.

Your first challengeis to find your way through the forest.

To enter the forestpress the button.

Question A 1 a

Calculate the circumference of a circlewith a diameter of 5.2 cm

Question A 1 a

Calculate the circumference of a circlewith a diameter of 5.2 cm

5.2 cm5.2 cm

16.3 cm16.3 cm21.2 cm21.2 cm 8.2 cm8.2 cm84.9 cm84.9 cm

Correct answer

You can see some light through the trees ahead

Press the button

Correct answer

You can see some light through the trees ahead

Press the button

Wrong answer

You’re lost in the forest

Press the button

Wrong answer

You’re lost in the forest

Press the button

Question A 1 b

Calculate the circumference of a circlewith a diameter of 15 m

Question A 1 b

Calculate the circumference of a circlewith a diameter of 15 m

706.9 m706.9 m 176.7 m176.7 m 47.1 m47.1 m 23.6 m23.6 m

15 m15 m

Correct answer

You can see some light through the trees ahead

Press the button

Correct answer

You can see some light through the trees ahead

Press the button

Wrong answer

You’re still lost in the forest

Press the button

Wrong answer

You’re still lost in the forest

Press the button

Question A 1 c

Using the formula C = πdcalculate the circumference of a circlewith a diameter of 7.8 mm

Question A 1 c

Using the formula C = πdcalculate the circumference of a circlewith a diameter of 7.8 mm

12.3 mm12.3 mm 24.5 mm24.5 mm 191.1 mm191.1 mm 47.8 mm47.8 mm

7.8 mm7.8 mm

Correct answer

You can see some light through the trees ahead at last

Press the button

Correct answer

You can see some light through the trees ahead at last

Press the button

Wrong answer

You’re lost deep in the forest

Press the button

Wrong answer

You’re lost deep in the forest

Press the button

Question A 1 d

Example:Calculate the circumference of a circlewith a diameter of 3.8 cm C= πd

= π × 3.8= 11.9 cm

Using the same method,calculate the circumference of a circlewith a diameter of 18.2 cm

Question A 1 d

Example:Calculate the circumference of a circlewith a diameter of 3.8 cm C= πd

= π × 3.8= 11.9 cm

Using the same method,calculate the circumference of a circlewith a diameter of 18.2 cm

1040.6 cm1040.6 cm 260.2 cm260.2 cm 28.6 cm28.6 cm 57.2 cm57.2 cm

Correct answer

You can see some light through the trees ahead eventually

Press the button

Correct answer

You can see some light through the trees ahead eventually

Press the button

Wrong answer

You can’t find your way through the forest

Press the button

Wrong answer

You can’t find your way through the forest

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

Question A 2 a

Calculate the circumference of a circlewith a radius of 8.1 m

Question A 2 a

Calculate the circumference of a circlewith a radius of 8.1 m

50.9 m50.9 m 25.4 m25.4 m 206.1 m206.1 m 824.5 m824.5 m

8.1 m8.1 m

Correct answer

You found your way through the forest

Press the button

Correct answer

You found your way through the forest

Press the button

Wrong answer

You’ve lost your way again

Press the button

Wrong answer

You’ve lost your way again

Press the button

Question A 2 b

Calculate the circumference of a circlewith a radius of 21 cm

Question A 2 b

Calculate the circumference of a circlewith a radius of 21 cm

66.0 cm66.0 cm 1385.4 cm1385.4 cm131.9 cm131.9 cm 346.4 cm346.4 cm

21 cm21 cm

Correct answer

You made it through the forest

Press the button

Correct answer

You made it through the forest

Press the button

Wrong answer

You’re way out seems to have disappeared

Press the button

Wrong answer

You’re way out seems to have disappeared

Press the button

Question A 2 c

Using the formula C = 2πrcalculate the circumference of a circlewith a radius of 6.4 mm

Question A 2 c

Using the formula C = 2πrcalculate the circumference of a circlewith a radius of 6.4 mm

128.7 mm128.7 mm 514.7 mm514.7 mm 20.1 mm20.1 mm 40.2 mm40.2 mm

6.4 mm6.4 mm

Correct answer

You finally made it through the forest

Press the button

Correct answer

You finally made it through the forest

Press the button

Wrong answer

You’re totally lost again

Press the button

Wrong answer

You’re totally lost again

Press the button

Question A 2 d

Example:Calculate the circumference of a circlewith a radius of 4.2 cm C= 2πr

= 2 × π × 4.2= 26.4 cm

Using the same method,calculate the circumference of a circlewith a radius of 12.5 m

Question A 2 d

Example:Calculate the circumference of a circlewith a radius of 4.2 cm C= 2πr

= 2 × π × 4.2= 26.4 cm

Using the same method,calculate the circumference of a circlewith a radius of 12.5 m

39.3 m39.3 m 78.5 m78.5 m 490.9 m490.9 m 122.7 m122.7 m

Correct answer

You made it through the forest eventually

Press the button

Correct answer

You made it through the forest eventually

Press the button

Wrong answer

You can’t find your way through the forest

Press the button

Wrong answer

You can’t find your way through the forest

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The castle is built high on a rockprotected by a massive wall.

Your next challengeis to climb the castle wall.

The castle is built high on a rockprotected by a massive wall.

Your next challengeis to climb the castle wall.

To try to find a way over the wallpress the button.

Question B 1 a

Calculate the area of a circlewith a radius of 4.2 m

Question B 1 a

Calculate the area of a circlewith a radius of 4.2 m

55.4 m255.4 m2 221.7 m2221.7 m2 13.2 m213.2 m2 26.4 m226.4 m2

4.2 m4.2 m

Correct answer

You’re halfway up

Press the button

Correct answer

You’re halfway up

Press the button

Wrong answer

You can’t get over the wall here – try again

Press the button

Wrong answer

You can’t get over the wall here – try again

Press the button

Question B 1 b

Calculate the area of a circlewith a radius of 2.8 cm

Question B 1 b

Calculate the area of a circlewith a radius of 2.8 cm

98.5 cm298.5 cm2 24.6 cm224.6 cm2 8.8 cm28.8 cm2 17.6 cm217.6 cm2

2.8 cm2.8 cm

Correct answer

You’re halfway up

Press the button

Correct answer

You’re halfway up

Press the button

Wrong answer

You still can’t find a way over the wall

Press the button

Wrong answer

You still can’t find a way over the wall

Press the button

Question B 1 c

Using the formula A = πr2

calculate the area of a circlewith a radius of 11.6 m

Question B 1 c

Using the formula A = πr2

calculate the area of a circlewith a radius of 11.6 m

1690.9 m21690.9 m2 422.7 m2422.7 m2 36.4 m236.4 m2 72.9 m272.9 m2

11.6 m11.6 m

Correct answer

You found a foothold at last

Press the button

Correct answer

You found a foothold at last

Press the button

Wrong answer

Still no way over the wall

Press the button

Wrong answer

Still no way over the wall

Press the button

Question B 1 d

Example:Calculate the area of a circlewith a radius of 3.8 cm A = πr2

= π × 3.82

= 45.4 cm2

Using the same method,calculate the area of a circlewith a radius of 8.6 mm

Question B 1 d

Example:Calculate the area of a circlewith a radius of 3.8 cm A = πr2

= π × 3.82

= 45.4 cm2

Using the same method,calculate the area of a circlewith a radius of 8.6 mm

11.9 mm211.9 mm2 23.9 mm223.9 mm2 232.4 mm2232.4 mm2 929.4 mm2929.4 mm2

Correct answer

You found a foothold eventually

Press the button

Correct answer

You found a foothold eventually

Press the button

Wrong answer

You can’t find a way over the wall

Press the button

Wrong answer

You can’t find a way over the wall

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

Question B 2 a

Calculate the area of a circlewith a diameter of 28.4 m

Question B 2 a

Calculate the area of a circlewith a diameter of 28.4 m

2533.9 m22533.9 m2 633.5 m2633.5 m2 89.2 m289.2 m2 44.6 m244.6 m2

28.4 m28.4 m

Correct answer

You climbed over the wall

Press the button

Correct answer

You climbed over the wall

Press the button

Wrong answer

You slipped again

Press the button

Wrong answer

You slipped again

Press the button

Question B 2 b

Calculate the area of a circlewith a diameter of 16 cm

Question B 2 b

Calculate the area of a circlewith a diameter of 16 cm

201.1 cm2201.1 cm2 804.2 cm2804.2 cm2 25.1 cm225.1 cm2 50.3 cm250.3 cm2

16 cm16 cm

Correct answer

You got over the wall

Press the button

Correct answer

You got over the wall

Press the button

Wrong answer

You can’t get back up now

Press the button

Wrong answer

You can’t get back up now

Press the button

Question B 2 c

Using the formula A = πr2

calculate the area of a circlewith a diameter of 9 mm

Question B 2 c

Using the formula A = πr2

calculate the area of a circlewith a diameter of 9 mm

28.3 mm228.3 mm2 14.1 mm214.1 mm2 254.5 mm2254.5 mm2 63.6 mm263.6 mm2

9 mm9 mm

Correct answer

You climbed over the wall at last

Press the button

Correct answer

You climbed over the wall at last

Press the button

Wrong answer

You can’t find the foothold again

Press the button

Wrong answer

You can’t find the foothold again

Press the button

Question B 2 d

Example:Calculate the area of a circlewith a diameter of 8.2 m A = πr2

= π × 4.12 (note: r = 4.1 m)= 52.8 m2

Using the same method,calculate the area of a circlewith a diameter of 26 cm

Question B 2 d

Example:Calculate the area of a circlewith a diameter of 8.2 m A = πr2

= π × 4.12 (note: r = 4.1 m)= 52.8 m2

Using the same method,calculate the area of a circlewith a diameter of 26 cm

81.7 cm281.7 cm2 40.8 cm240.8 cm2 530.9 cm2530.9 cm2 2123.7 cm22123.7 cm2

Correct answer

You got over the wall at last

Press the button

Correct answer

You got over the wall at last

Press the button

Wrong answer

You can’t find a way over the wall

Press the button

Wrong answer

You can’t find a way over the wall

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

Inside the castle grounds is a fierce dragonguarding the cell where the princess is being kept.

To rescue the princess,you must get past the dragon.

Inside the castle grounds is a fierce dragonguarding the cell where the princess is being kept.

To rescue the princess,you must get past the dragon.

To try to get past the dragonpress the button.

Question C 1 a

Calculate the diameter of a circlewith a circumference of 40.2 cm

Question C 1 a

Calculate the diameter of a circlewith a circumference of 40.2 cm

63.1 cm63.1 cm 126.3 cm126.3 cm 6.4 cm6.4 cm 12.8 cm12.8 cm

Correct answer

You’re almost past the dragon

Press the button

Correct answer

You’re almost past the dragon

Press the button

Wrong answer

You didn’t manage to get past the dragon this time

Press the button

Wrong answer

You didn’t manage to get past the dragon this time

Press the button

Question C 1 b

Calculate the diameter of a circlewith a circumference of 81.4 m

Question C 1 b

Calculate the diameter of a circlewith a circumference of 81.4 m

25.9 m25.9 m 13.0 m13.0 m 255.7 m255.7 m 127.9 m127.9 m

Correct answer

You almost past the dragon

Press the button

Correct answer

You almost past the dragon

Press the button

Wrong answer

You still didn’t get past the dragon

Press the button

Wrong answer

You still didn’t get past the dragon

Press the button

Question C 1 c

Using the formula C = πdcalculate the diameter of a circlewith a circumference of 63.5 mm

Question C 1 c

Using the formula C = πdcalculate the diameter of a circlewith a circumference of 63.5 mm

10.1 mm10.1 mm 20.2 mm20.2 mm 199.5 mm199.5 mm 99.7 mm99.7 mm

Correct answer

You almost past the dragon

Press the button

Correct answer

You almost past the dragon

Press the button

Wrong answer

You need to try harder to get past the dragon

Press the button

Wrong answer

You need to try harder to get past the dragon

Press the button

Question C 1 d

Example:Calculate the diameter of a circlewith a circumference of 17.9 cm C= πd 17.9 = πd d = 17.9 = 5.7 cm

π

Using the same method,calculate the diameter of a circlewith a circumference of 96.2 cm

Question C 1 d

Example:Calculate the diameter of a circlewith a circumference of 17.9 cm C= πd 17.9 = πd d = 17.9 = 5.7 cm

π

Using the same method,calculate the diameter of a circlewith a circumference of 96.2 cm

302.2 cm302.2 cm 151.1 cm151.1 cm 15.3 cm15.3 cm 30.6 cm30.6 cm

Correct answer

You’re almost past the dragon

Press the button

Correct answer

You’re almost past the dragon

Press the button

Wrong answer

You can’t find a way past the dragon

Press the button

Wrong answer

You can’t find a way past the dragon

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

Question C 2 a

Calculate the radius of a circlewith a circumference of 28.4 mm

Question C 2 a

Calculate the radius of a circlewith a circumference of 28.4 mm

4.5 mm4.5 mm 9.0 mm9.0 mm 89.2 mm89.2 mm 178.4 mm178.4 mm

Correct answer

You got past the dragon

Press the button

Correct answer

You got past the dragon

Press the button

Wrong answer

Still a bit further to go

Press the button

Wrong answer

Still a bit further to go

Press the button

Question C 2 b

Calculate the radius of a circlewith a circumference of 78.1 mm

Question C 2 b

Calculate the radius of a circlewith a circumference of 78.1 mm

245.4 mm245.4 mm 490.7 mm490.7 mm 12.4 mm12.4 mm 24.9 mm24.9 mm

Correct answer

You got past the dragon

Press the button

Correct answer

You got past the dragon

Press the button

Wrong answer

You’re still not there yet

Press the button

Wrong answer

You’re still not there yet

Press the button

Question C 2 c

Using the formula C = 2πrcalculate the radius of a circlewith a circumference of 44.3 m

Question C 2 c

Using the formula C = 2πrcalculate the radius of a circlewith a circumference of 44.3 m

14.1 m14.1 m 7.1 m7.1 m 139.2 m139.2 m 278.3 m278.3 m

Correct answer

You managed to get past the dragon this time

Press the button

Correct answer

You managed to get past the dragon this time

Press the button

Wrong answer

You’re struggling to find a way past the dragon

Press the button

Wrong answer

You’re struggling to find a way past the dragon

Press the button

Question C 2 d

Example:Calculate the radius of a circlewith a circumference of 20.4 cm C= 2πr 20.4 = 2πr r = 20.4 = 3.2 cm (use your calculator

2π to make sure you can get this)Using the same method,calculate the radius of a circlewith a circumference of 38.4 m

Question C 2 d

Example:Calculate the radius of a circlewith a circumference of 20.4 cm C= 2πr 20.4 = 2πr r = 20.4 = 3.2 cm (use your calculator

2π to make sure you can get this)Using the same method,calculate the radius of a circlewith a circumference of 38.4 m

12.2 m12.2 m 6.1 m6.1 m 120.6 m120.6 m 241.3 m241.3 m

Correct answer

You eventually got past the dragon

Press the button

Correct answer

You eventually got past the dragon

Press the button

Wrong answer

There is no way past the dragon

Press the button

Wrong answer

There is no way past the dragon

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The princess is locked inside a cellwith a strong door.

You must break open the locksof the cell door.

The princess is locked inside a cellwith a strong door.

You must break open the locksof the cell door.

To try and break the lockspress the button.

Question D 1 a

Calculate the radius of a circlewith an area of 75.4 cm2

Question D 1 a

Calculate the radius of a circlewith an area of 75.4 cm2

24.0 cm24.0 cm 12.0 cm12.0 cm 4.9 cm4.9 cm 2.4 cm2.4 cm

Correct answer

You have broken off one lock

Press the button

Correct answer

You have broken off one lock

Press the button

Wrong answer

You can’t get through the door

Press the button

Wrong answer

You can’t get through the door

Press the button

Question D 1 b

Calculate the radius of a circlewith an area of 24.6 cm2

Question D 1 b

Calculate the radius of a circlewith an area of 24.6 cm2

2.8 cm2.8 cm 1.4 cm1.4 cm 7.8 cm7.8 cm 3.9 cm3.9 cm

Correct answer

You have broken off one lock

Press the button

Correct answer

You have broken off one lock

Press the button

Wrong answer

You still can’t get through the door

Press the button

Wrong answer

You still can’t get through the door

Press the button

Question D 1 c

Using the formula A = πr2

calculate the radius of a circlewith an area of 415.5 cm2

Question D 1 c

Using the formula A = πr2

calculate the radius of a circlewith an area of 415.5 cm2

5.8 cm5.8 cm 11.5 cm11.5 cm 132.3 cm132.3 cm 66.1 cm66.1 cm

Correct answer

You have managed to break off one lock

Press the button

Correct answer

You have managed to break off one lock

Press the button

Wrong answer

There seems no way through the door

Press the button

Wrong answer

There seems no way through the door

Press the button

Question D 1 d

Example:Calculate the radius of a circlewith an area of 120.8 mm2

A = πr2

120.8 = πr2

r2 = 120.8 = 38.5 π

r = √38.5 = 6.2 mm

Using the same method,calculate the radius of a circlewith an area of 339.8 cm2

Question D 1 d

Example:Calculate the radius of a circlewith an area of 120.8 mm2

A = πr2

120.8 = πr2

r2 = 120.8 = 38.5 π

r = √38.5 = 6.2 mm

Using the same method,calculate the radius of a circlewith an area of 339.8 cm2

108.2 cm108.2 cm 54.1 cm54.1 cm 10.4 cm10.4 cm 5.2 cm5.2 cm

Correct answer

You have broken one lock eventually

Press the button

Correct answer

You have broken one lock eventually

Press the button

Wrong answer

The door is too strong!

Press the button

Wrong answer

The door is too strong!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

Question D 2 a

Calculate the diameter of a circlewith an area of 105.7 cm2

Question D 2 a

Calculate the diameter of a circlewith an area of 105.7 cm2

5.8 cm5.8 cm 11.6 cm11.6 cm 33.6 cm33.6 cm 16.8 cm16.8 cm

Correct answer

You have broken through the door

Press the button

Correct answer

You have broken through the door

Press the button

Wrong answer

The second lock is too strong

Press the button

Wrong answer

The second lock is too strong

Press the button

Question D 2 b

Calculate the diameter of a circlewith an area of 326.9 m2

Question D 2 b

Calculate the diameter of a circlewith an area of 326.9 m2

104.1 m104.1 m 52.0 m52.0 m 10.2 m10.2 m 20.4 m20.4 m

Correct answer

You have broken through the door

Press the button

Correct answer

You have broken through the door

Press the button

Wrong answer

You can’t break the second lock

Press the button

Wrong answer

You can’t break the second lock

Press the button

Question D 2 c

Using the formula A = πr2

calculate the diameter of a circlewith an area of 58.1 mm2

(calculate the radius first and then use this to work out the diameter)

Question D 2 c

Using the formula A = πr2

calculate the diameter of a circlewith an area of 58.1 mm2

(calculate the radius first and then use this to work out the diameter)

18.5 mm18.5 mm 9.2 mm9.2 mm 8.6 mm8.6 mm 4.3 mm4.3 mm

Correct answer

You managed to get through the door

Press the button

Correct answer

You managed to get through the door

Press the button

Wrong answer

You can’t find a way to break the second lock

Press the button

Wrong answer

You can’t find a way to break the second lock

Press the button

Question D 2 d

Example:Calculate the diameter of a circlewith an area of 66.5 cm2

A = πr2

r2 = 66.5 = 21.2 π

r = √21.2 = 4.6 cm d = 9.2 cm (diameter = 2 × radius)

Using the same method,calculate the diameter of a circlewith an area of 40.7 m2

Question D 2 d

Example:Calculate the diameter of a circlewith an area of 66.5 cm2

A = πr2

r2 = 66.5 = 21.2 π

r = √21.2 = 4.6 cm d = 9.2 cm (diameter = 2 × radius)

Using the same method,calculate the diameter of a circlewith an area of 40.7 m2

13.0 m13.0 m 6.5 m6.5 m 3.6 m3.6 m 7.2 m7.2 m

Correct answer

You broke through the door at last

Press the button

Correct answer

You broke through the door at last

Press the button

Wrong answer

The second lock will not break

Press the button

Wrong answer

The second lock will not break

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord stands between youand the princess.

You must fight the evil lordand defeat him.

The evil lord stands between youand the princess.

You must fight the evil lordand defeat him.

To start the fightpress the button.

Question E 1 a

Calculate the length of the arcshown below.

Question E 1 a

Calculate the length of the arcshown below.

24.0 cm24.0 cm 102.8 cm102.8 cm 9.6 cm9.6 cm 4.8 cm4.8 cm

110º110º

5 cm5 cm

Correct answer

You hit the evil lord

Press the button

Correct answer

You hit the evil lord

Press the button

Wrong answer

You missed the evil lord

Press the button

Wrong answer

You missed the evil lord

Press the button

Question E 1 b

Calculate the length of the arcshown below.

Question E 1 b

Calculate the length of the arcshown below.

39.3 mm39.3 mm 78.5 mm78.5 mm 706.9 mm706.9 mm 162.9 mm162.9 mm

250º250º18 mm18 mm

Correct answer

You hit the evil lord

Press the button

Correct answer

You hit the evil lord

Press the button

Wrong answer

You missed the evil lord again

Press the button

Wrong answer

You missed the evil lord again

Press the button

Question E 1 c

Using the formula: arc length = 2πr × θ 360ºcalculate the length of the arcshown below.

Question E 1 c

Using the formula: arc length = 2πr × θ 360ºcalculate the length of the arcshown below.

113.1 m113.1 m 11.2 m11.2 m 22.3 m22.3 m

160º160º

8 m8 m

89.4 m89.4 m

Correct answer

You hit the evil lord at last

Press the button

Correct answer

You hit the evil lord at last

Press the button

Wrong answer

The evil lord is too good

Press the button

Wrong answer

The evil lord is too good

Press the button

3.9 cm3.9 cm 135.7 cm135.7 cm 2.6 cm2.6 cm

70º70º6 m6 m

50º50º3 cm3 cm

1.3 cm1.3 cm

Question E 1 d

Example:Calculate the length of the arcshown to the right. arc length = 2πr × θ 360º

= 2 × π × 6 × 70º 360º

= 7.3 m

Using the same method,calculate the length of the arcshown to the right.

Question E 1 d

Example:Calculate the length of the arcshown to the right. arc length = 2πr × θ 360º

= 2 × π × 6 × 70º 360º

= 7.3 m

Using the same method,calculate the length of the arcshown to the right.

Correct answer

You hit the evil lord eventually

Press the button

Correct answer

You hit the evil lord eventually

Press the button

Wrong answer

The evil lord has defeated you

Press the button

Wrong answer

The evil lord has defeated you

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

The evil lord has escaped with the princess,you have lost her forever!!

Press the button

Question E 2 a

Calculate the area of the sectorshown below.

Question E 2 a

Calculate the area of the sectorshown below.

24.0 cm224.0 cm2 257.0 cm2257.0 cm2 9.6 cm29.6 cm2 4.8 cm24.8 cm2

110º110º

5 cm5 cm

Correct answer

You beat the evil lord

Press the button

Correct answer

You beat the evil lord

Press the button

Wrong answer

The evil lord got up again

Press the button

Wrong answer

The evil lord got up again

Press the button

Question E 2 b

Calculate the area of the sectorshown below.

Question E 2 b

Calculate the area of the sectorshown below.

39.3 mm239.3 mm2 78.5 mm278.5 mm2 706.9 mm2706.9 mm2 1465.7 mm21465.7 mm2

250º250º18 mm18 mm

Correct answer

You beat the evil lord this time

Press the button

Correct answer

You beat the evil lord this time

Press the button

Wrong answer

The evil lord is too strong

Press the button

Wrong answer

The evil lord is too strong

Press the button

Question E 2 c

Using the formula: sector area = πr2 × θ 360ºcalculate the area of the sectorshown below.

Question E 2 c

Using the formula: sector area = πr2 × θ 360ºcalculate the area of the sectorshown below.

22.3 m222.3 m2 89.4 m289.4 m2 452.4 m2452.4 m2

160º160º

8 m8 m

11.2 m211.2 m2

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Question E 2 d

Example:Calculate the area of the sectorshown to the right. sector area = πr2 × θ 360º

= π × 62 × 70º 360º

= 22.0 m2

Using the same method,calculate the area of the sectorshown to the right.

Question E 2 d

Example:Calculate the area of the sectorshown to the right. sector area = πr2 × θ 360º

= π × 62 × 70º 360º

= 22.0 m2

Using the same method,calculate the area of the sectorshown to the right.

1.3 cm21.3 cm2 2.6 cm22.6 cm2 3.9 cm23.9 cm2

70º70º6 m6 m

50º50º3 cm3 cm

203.6 cm2203.6 cm2

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