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 = 56
1 u = 56 ÷ 4 = 14
3 breadth = 1 length of the small rectangle
= 3 x 14
= 42 cm
Perimeter of one small rectangle
= 42 + 14 + 42 + 14
= 112 cm
(b)
Length of the large rectangle
= 4 u
= 4 x 14
= 56 cm
Perimeter of whole figure
= 56 + 42 + 56 + 42
= 196 cm
Answer(s): (a) 112 cm; (b) 196 cm