The figure is made up of 3 squares of side 3 cm, 9 cm and 12 cm. Find
- the perimeter of the figure.
- the area of the figure.
(a)
Perimeter of the figure
= 4 x 12 + 2 x 9 + 2 x 3 + 2 x (9 - 3)
= 4 x 12 + 2 x 9 + 2 x 3 + 2 x 6
= 48 + 18 + 6 + 12
= 84 cm
(b)
Area of the figure
= 12 x 12 + 3 x 3 + 9 x 9
= 144 + 9 + 81
= 234 cm
2 Answer(s): (a) 84 cm; (b) 234 cm
2