Figure RSTU is made up of ten identical rectangles. Each rectangle has a length of 36 cm.
- Find the perimeter of Figure RSTU.
- Find the area of Figure RSTU
(a)
Breadth of one rectangle = 1 u
Length of one length = 4 u
4 u = 36
1 u = 36 ÷ 4 = 9
Length of Figure RSTU = 8 u
Breadth of Figure RSTU = 5 u
Perimeter of Figure RSTU
= 8 u + 8 u + 5 u + 5 u
= 26 u
= 26 x 9
= 234 cm
(b)
Area of 1 rectangle
= 36 x 9
= 324 cm
2 Area of Figure RSTU
= 10 x 324
= 3240 cm
2 Answer(s): (a) 234 cm; (b) 3240 cm
2