One shape
Q1
20 cm
Q5
24cm
Q9
8 cm
Definition of perimeter
Total length of the boundary of a shape
Q2
30 cm
Q6
18 cm
Q10
28 cm
Maria took one round of a square shaped park. Each side is 15 meters long. What is the perimeter of the park?
15 + 15 + 15 + 15 = 60 m
The perimeter of the park is 60 meters.
Q3
46 cm
Q7
27
Q11
18 cm
A rectangular board was 6 meters wide and 9 meters long. What is the perimeter of the board?
6 + 9 + 6 + 9 = 30m
The perimeter of the board is 30 meters.
Q4
40 cm
Q8
47 cm
Q12
21 cm
Find out the Length of a rectangle.
If Perimeter = 32 m and Width = 2 m
Perimeter = length + width + length + width
32 = L + 2 + L + 2
32 = 4 + L + L
32 - 4 = L + L
28 = L + L
28 รท 2 = L = 12