Figure KLMN is made up of six identical rectangles. Each rectangle has a length of 18 cm.
- Find the perimeter of Figure KLMN.
- Find the area of Figure KLMN
(a)
Breadth of one rectangle = 1 u
Length of one length = 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Length of Figure KLMN = 4 u
Breadth of Figure KLMN = 3 u
Perimeter of Figure KLMN
= 4 u + 4 u + 3 u + 3 u
= 14 u
= 14 x 9
= 126 cm
(b)
Area of 1 rectangle
= 18 x 9
= 162 cm
2 Area of Figure KLMN
= 6 x 162
= 972 cm
2 Answer(s): (a) 126 cm; (b) 972 cm
2