Figure FGHJ is made up of eight identical rectangles. Each rectangle has a length of 9 cm.
- Find the perimeter of Figure FGHJ.
- Find the area of Figure FGHJ
(a)
Breadth of one rectangle = 1 u
Length of one length = 3 u
3 u = 9
1 u = 9 ÷ 3 = 3
Length of Figure FGHJ = 6 u
Breadth of Figure FGHJ = 4 u
Perimeter of Figure FGHJ
= 6 u + 6 u + 4 u + 4 u
= 20 u
= 20 x 3
= 60 cm
(b)
Area of 1 rectangle
= 9 x 3
= 27 cm
2 Area of Figure FGHJ
= 8 x 27
= 216 cm
2 Answer(s): (a) 60 cm; (b) 216 cm
2