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 = 48
1 u = 48 ÷ 4 = 12
3 breadth = 1 length of the small rectangle
= 3 x 12
= 36 cm
Perimeter of one small rectangle
= 36 + 12 + 36 + 12
= 96 cm
(b)
Length of the large rectangle
= 4 u
= 4 x 12
= 48 cm
Perimeter of whole figure
= 48 + 36 + 48 + 36
= 168 cm
Answer(s): (a) 96 cm; (b) 168 cm