Figure NPQR is made up of ten identical rectangles. Each rectangle has a length of 40 cm.
- Find the perimeter of Figure NPQR.
- Find the area of Figure NPQR
(a)
Breadth of one rectangle = 1 u
Length of one length = 4 u
4 u = 40
1 u = 40 ÷ 4 = 10
Length of Figure NPQR = 8 u
Breadth of Figure NPQR = 5 u
Perimeter of Figure NPQR
= 8 u + 8 u + 5 u + 5 u
= 26 u
= 26 x 10
= 260 cm
(b)
Area of 1 rectangle
= 40 x 10
= 400 cm
2 Area of Figure NPQR
= 10 x 400
= 4000 cm
2 Answer(s): (a) 260 cm; (b) 4000 cm
2