Study the figure.
- Find the perimeter of one small rectangle.
- Find the perimeter of the whole figure.
(a)
Length = 3 u
Breadth = 1 u
4 u = 28
1 u = 28 ÷ 4 = 7
3 breadth = 1 length of the small rectangle
= 3 x 7
= 21 m
Perimeter of one small rectangle
= 21 + 7 + 21 + 7
= 56 m
(b)
Length of the large rectangle
= 4 u
= 4 x 7
= 28 m
Perimeter of whole figure
= 28 + 21 + 28 + 21
= 98 m
Answer(s): (a) 56 m; (b) 98 m