Given the figure that is not drawn to scale, find
- its perimeter.
- its area.
(a)
Perimeter of the figure
= (4 x 18) + (4 x 2) + (4 x 4)
= 72 + 8 + 16
= 96 cm
(b)
Length of AB
= 18 - 4 - 4
= 10 cm
Length of CD
= 18 - 2 - 2
= 14 cm
Area of the figure
= (18 x 18) - (2 x (10 x 2)) - (2 x (14 x 4))
= 324 - 40 - 112
= 172 cm
2 Answer(s): (a) 96 cm; (b) 172 cm
2