Post on 05-Jul-2015
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6th Grade:Rectangle/Square
Perimeter, Area, & Volume
Rectangles/Squares
What does a Rectangle/Square look like?
OR
Rectangle Square
Formulas
PeRIMeter: Area: Volume:
P=2l+2w A=L*W V=L*W*H
What is a PeRIMeter?
•The distance around the shape•RIM around the shape
How do I find the PeRIMeter?
•2(length)+2(width)
PeRIMeter
Width
Length
Let’s Try together:
Remember:
P=2L+2W
We Know:
Length=6Width=3
Now that we know the Length and Width, we plug it into the formula:
P=2L+2WP=2(6)+2(3)
P=12+6
P=18 units
Lets Practice:Remember the Steps:
1.Identify the Length & Width
2. Plug it into the Formula3.Don’t forget your units!
Find the PeRIMeter
of the following two problems:
1. 2.
Let’s Check Our Answers:
1.
L= 7 inW= 4 inP=2L+2WP=2( 7) +2(4)P=14+8P=22 inches
2.
L=8 ftW= 8 ftP=2L + 2WP=2(8) + 2(8)P=16 + 16P=32 Ft
Area:
What is the Area?•The number of square units the figure covers
How do we find the Area?•Area=Length * Width
Let’s Try together:
A = L * W5
1 1 1 1 1
11 1
4
From the picture we see that:L= 5W= 4Now we plug these values into the formula:A=L * WA= 5 * 4
A= 20 units²Notice the # boxes!
Let’s Practice:
Find the Areas:
1. 2.
Let’s Check our Answers:
Find the Areas:1. 2.
9
2
L=6W=3A=L * WA= 6 * 3
A= 18 Units²
L=9W=2A= L* WA= 9 * 2
A= 18 Units²
Volume of a Cube:
What is Volume?•The amount of 3 dimensional space an object occupies
How do we find the Volume?•Volume= Length * Width * Height
Let’s Try together:
V=L * W * H
L-20 ftW= 8 ftH=8 ft
L=20 ft W=8 ft H= 8 ftV = L * W * HV = 20 * 8 * 8
V =1280 ft³
Let’s Practice:
Find the volume:
Hint:Use the boxes to
count the Length, Width, &
Height
Let’s Check:
Find the volume:
From the boxes we can see the
Length=3; Width=3. & Height=3So….V= Length * Width * HeightV= 3 * 3 * 3
V=27 units³
3
3
Let’s Review What
We Learned Today
With Jeopardy!!
Hint: Remember The Formulas We Learned!
Perimeter:
P=2L + 2W
Area:
A= L*W
Volume:
V= L*W*H
a) 21 cm³
b) 280 cm³
c)375 cm³
d) 145 cm³
What is the volumeof the cube below?
Excellent!!You are
Correct!!
Back to the quiz
a)25 m²
b) 20 m²
c) 55 m²
d) 38 m²
What is the Area of
the shape below?
Excellent!!You are
Correct!!
Back to the quiz
a) 98 cm
b) 42 cm
c) 40 cm
d) 100 cm
What is the
PeRIMeter of the
rectangle?
Excellent!!You are
Correct!!
Back to the quiz
a) P=12 cm A=15 cm²
b) P=10 cm A=9 cm²
c) 12 cm A=8 cm²
What is the PeRIMeter
and Area of the square
below?
d) 12 cm A=9 cm²
c) 10 cm A=9 cm²
c) 12 cm A=5 cm²
cm
Excellent!!You are
Correct!!
Back to the quiz
a) 590 cm³
b) 150 cm³
c)160 cm³
d) 140 cm³
What is the Volume of the cube below?
Excellent!!You are
Correct!!
UYou did Great, Keep up the Good Work!!
Sorry this is the wrong answer….
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