Figure LMNP is made up of eight identical rectangles. Each rectangle has a length of 12 cm.
- Find the perimeter of Figure LMNP.
- Find the area of Figure LMNP
(a)
Breadth of one rectangle = 1 u
Length of one length = 3 u
3 u = 12
1 u = 12 ÷ 3 = 4
Length of Figure LMNP = 6 u
Breadth of Figure LMNP = 4 u
Perimeter of Figure LMNP
= 6 u + 6 u + 4 u + 4 u
= 20 u
= 20 x 4
= 80 cm
(b)
Area of 1 rectangle
= 12 x 4
= 48 cm
2 Area of Figure LMNP
= 8 x 48
= 384 cm
2 Answer(s): (a) 80 cm; (b) 384 cm
2