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 = 24
1 u = 24 ÷ 4 = 6
3 breadth = 1 length of the small rectangle
= 3 x 6
= 18 cm
Perimeter of one small rectangle
= 18 + 6 + 18 + 6
= 48 cm
(b)
Length of the large rectangle
= 4 u
= 4 x 6
= 24 cm
Perimeter of whole figure
= 24 + 18 + 24 + 18
= 84 cm
Answer(s): (a) 48 cm; (b) 84 cm