Figure PQRS is made up of ten identical rectangles. Each rectangle has a length of 20 cm.
- Find the perimeter of Figure PQRS.
- Find the area of Figure PQRS
(a)
Breadth of one rectangle = 1 u
Length of one length = 4 u
4 u = 20
1 u = 20 ÷ 4 = 5
Length of Figure PQRS = 8 u
Breadth of Figure PQRS = 5 u
Perimeter of Figure PQRS
= 8 u + 8 u + 5 u + 5 u
= 26 u
= 26 x 5
= 130 cm
(b)
Area of 1 rectangle
= 20 x 5
= 100 cm
2 Area of Figure PQRS
= 10 x 100
= 1000 cm
2 Answer(s): (a) 130 cm; (b) 1000 cm
2