The figure is made up of 3 squares of side 5 cm, 9 cm and 11 cm. Find
- the perimeter of the figure.
- the area of the figure.
(a)
Perimeter of the figure
= 4 x 11 + 2 x 9 + 2 x 5 + 2 x (9 - 5)
= 4 x 11 + 2 x 9 + 2 x 5 + 2 x 4
= 44 + 18 + 10 + 8
= 80 cm
(b)
Area of the figure
= 11 x 11 + 5 x 5 + 9 x 9
= 121 + 25 + 81
= 227 cm
2 Answer(s): (a) 80 cm; (b) 227 cm
2