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 = 60
1 u = 60 ÷ 4 = 15
3 breadth = 1 length of the small rectangle
= 3 x 15
= 45 m
Perimeter of one small rectangle
= 45 + 15 + 45 + 15
= 120 m
(b)
Length of the large rectangle
= 4 u
= 4 x 15
= 60 m
Perimeter of whole figure
= 60 + 45 + 60 + 45
= 210 m
Answer(s): (a) 120 m; (b) 210 m