395x Filetype PPTX File size 0.29 MB Source: www.d11.org
Perimeter
What is a Perimeter?
The sum of all the sides of a shape (S1+S2+S3+S4+
…)
For a Rectangle: P = 2 (H + W)
P = Perimeter, H = Height, W = Width
W = Width
H = Height
What Is the Perimeter?
A rectangle has a width of 3” and a height of 2”.
What is the perimeter of the rectangle?
3”
2”
P = 2 (H + W)
P = 2 (2”+3”)
P = 10”
What Is the Perimeter?
A rectangle has a width of 6’- 6” and a height of 4’-0”.
What is the perimeter of the rectangle?
6’- 6”
Convert 6’-6” to decimal feet
4’-0” 6’-6” = 6 ft +
= 6.5 ft
P = 2 (H + W)
P = 2 (4’+6.5’)
P = 21’
What Is the Perimeter?
A rectangle has a width of 8’-4” and a height of 4’-3”.
What is the perimeter of the rectangle?
8’ - 4”
Convert to decimal feet
8’-4” = 8 ft +
= 8.33 ft 4’ - 3”
4’-3” = 4 ft +
= 4.25 ft
P = 2 (H + W)
P = 2 (4.25’+8.33’)
P = 25.16’
Perimeter
How would you determine the perimeter of this shape?
3”
3”
2”
6”
3”
5”
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