Figure JKLM is made up of eight identical rectangles. Each rectangle has a length of 30 cm.
- Find the perimeter of Figure JKLM.
- Find the area of Figure JKLM
(a)
Breadth of one rectangle = 1 u
Length of one length = 3 u
3 u = 30
1 u = 30 ÷ 3 = 10
Length of Figure JKLM = 6 u
Breadth of Figure JKLM = 4 u
Perimeter of Figure JKLM
= 6 u + 6 u + 4 u + 4 u
= 20 u
= 20 x 10
= 200 cm
(b)
Area of 1 rectangle
= 30 x 10
= 300 cm
2 Area of Figure JKLM
= 8 x 300
= 2400 cm
2 Answer(s): (a) 200 cm; (b) 2400 cm
2