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Perimeter of Polygons
Rectangles and Squares
Problem Solving
Definitions
Extend
100
What is the perimeter of a pentagon with equal sides of 5 cm?
25 cm.
100
What is the perimeter of a rectangle with sides of 7 m and 8 m long?
30 m
100
Robert is building a dog house for his puppy. If the house measures 2m by 3m, what is the perimetre of the house?
10 m
100
If you walk around the playground, you are walking around its...
Perimetre
100
Nick jogs around a pentagon shaped building twice. Each side is 203 m long. How far has Nick run?
2 030 m
200
An equilateral triangle has sides that measure 7 mm. What is the perimeter?
21 mm
200
What is the perimetre of a rectangle that is 5 cm long and 9 cm tall?
28 cm
200
Jane wants to frame a picture that is 11 cm tall and 8 cm wide. How much wood would she need to frame the picture?
38 cm
200
Alex wants to know how much wood he needs to frame a picture. He should calculate for...
Perimetre
200
Rob plans to build three tennis courts in his back yard. He can choose between Plan A or Plan B (Refer to diagram on the board). If he wants to build a fence around the outside, which plan will take the least amount of fencing?
Both plans need 120 m of fence so either plan works.
300
Find the perimeter of an octagon with equal sides that measure 11 km.
88 km
300
Draw a diagram of a rectangle with base 6 mm and height 15 mm
*answer on the board*
300
A table is three metres long and two metres wide. What is the total perimetre of three tables put together? Draw a diagram of the set up.
22 m OR 18 m (depending on which way you set up the tables).
300
What is one formula we've used to define perimetre?
*answers may vary* ex. P=2l+2w
300
A circle with radius 6 m has been cut into 8 equal parts (like a pizza). What is the perimetre of one section of the circle?
16.71 m
400
Find the perimeter of a hexagon that has equal sides of 14 mm
84 mm
400
Find the perimetre of a rectangle with one side that is 5.5 mm long and one side that is 7 mm long
25 mm
400
James builds a room in his house that is 10 metres wide and 12 metres long. He adds on another room that is 10 metres wide and 9 metres long. The two rooms share a wall. What is the total perimeter for the two rooms put together? Draw a diagram.
62 metres
400
To figure out the length of a certain shape with a perimeter of 32 cm, Tim divided 32 into 8 equal parts. What shape does Tim have?
An octagon
400
The perimetre of a poster is 16 m. The width is 3 m. How tall is the poster?
5 m
500
An equilateral triangle has a perimeter of 24 cm. What is the length of one side of the triangle?
8 cm
500
A square has a total perimeter of 12 m. What are the side lengths?
3 m
500
A rectangle has a total perimeter of 32 cm. The rectangle is 10 cm long. What is the height of the rectangle?
6 cm
500
Carey knows that one side of a triangle is 7 mm long. She added 7 three times and correctly calculated that the perimeter is 21 inches. This kind of triangle is called...
An equilateral triangle
500
You plan on putting a window in your house. You want the window to be a rectangle on the bottom and a semi circle on the top where the rectangle's dimensions are 6 m long by 4 m high. (Refer to diagram on the board). What is the total perimetre of the window?
32.85 m