Chapter 8 Review

Game!

h

h

1.

4.

2.

3.

10 cmcm

4 cm

cm

cm

2.5 cm

3 cm

Find the area of the parallelogram

ANSWERS

1. 62cm² 2. 45cm² 3. 24cm² 4. 15cm²

1.

4.

2.

3.

Find the perimeter of the triangle

4 in

ANSWERS

1. 15in 2. 12in 3. 12in 4. 15in

1. 2.

3. 4.

4 cm

3cm6 cm

Find the area of the triangle

ANSWERS

1. 33cm²2. 6cm² 3. 10cm² 4. 12cm²

1.

3. 4.

2.

Find the area of the trapezoid

11cm

14cm

7cm

ANSWERS

1. 138cm² 2. 120cm² 3. 87.5cm² 4. 130cm²

GROUP PROBLEM!!!!!• Find the total

area (measured in feet) of the irregular shape.

• Send #1 to go write it on the board once you have your answer.

Answer

44 ft²

1.

4.3.

2.

Find the circumference of the circle

8 cm

6 cm

ANSWERS

1. 18.85cm 2. 18.85cm 3. 25.13cm 4. 25.13cm

Find the area of the circle

1.

3. 4.

2.

6 cm

8 cm

ANSWERS

1. 28.27cm² 2. 12.57cm² 3. 78.54cm² 4. 50.27cm²

1.

3.

2.

4.

Estimating Square Roots

Laura has a square rug with an area of 120 ft² (recall the area formula for a square). About how long is one side of her rug?

Mark has a square rug with an area of 65 ft² (recall the area formula for a square). About how long is one side of his rug?

Karen has a square rug with an area of 80 ft² (recall the area formula for a square). About how long is one side of her rug?

Shelby has a square rug with an area of 99 ft² (recall the area formula for a square). About how long is one side of her rug?

ANSWERS

1. 11 ft2. 8 ft3. 9 ft4. 10 ft

1.

4.3.

2.

Rational or Irrational?

45.3456743…

ANSWERS

1. Rational2. Rational3. Irrational4. Irrational

1. 2.

3. 4.

Find the missing side length using the Pythagorean Theorem

cm

cm

6 cm

7 cm

ANSWERS

1. 5cm 2. 5.3 cm 3. 5.7cm 4. 13cm

GROUP PROBLEM!!!!!• A helicopter rose

vertically 300 meters and then flew east 500 meters. How far is the helicopter now from its starting place?

Answer

583.1 meters

Name the figure

1. 2.

4.3.

ANSWERS

1. Pentagonal Prism2. Pentagonal Pyramid3. Cone4. Triangular Pyramid

1.

4.

2.

3.

Find the surface area of the prism

10 c

m

7 c

m

16 cm

ANSWERS

1. 108cm 2. 111cm 3. 471.2cm 4. 428.8cm

1.

3. 4.

2.

Find the volume of the rectangular prism

ANSWERS

1. 120cm³ 2. 60cm³ 3. 2560cm³ 4. 60cm³

1. 2.

3. 4.

Find the volume of the triangular prism

ANSWERS

1. 96cm³ 2. 66cm³ 3. 144cm³ 4. 720cm³

1. 2.

3. 4.

Find the volume of the cylinder

ANSWERS

1. 785.4cm³ 2. 50.3cm³ 3. 502.7cm³ 4. 3015.9cm³