The figure is made up of 3 squares of side 5 cm, 10 cm and 15 cm. Find
- the perimeter of the figure.
- the area of the figure.
(a)
Perimeter of the figure
= 4 x 15 + 2 x 10 + 2 x 5
= 60 + 20 + 10
= 90 cm
(b)
Area of the figure
= 5 x 5 + 15 x 15 + 10 x 10
= 25 + 225 + 100
= 350 cm
2 Answer(s): (a) 90 cm; (b) 350 cm
2