Given the figure that is not drawn to scale, find
- its perimeter.
- its area.
(a)
Perimeter of the figure
= (4 x 20) + (4 x 3) + (4 x 4)
= 80 + 12 + 16
= 108 cm
(b)
Length of AB
= 20 - 4 - 4
= 12 cm
Length of CD
= 20 - 3 - 3
= 14 cm
Area of the figure
= (20 x 20) - (2 x (12 x 3)) - (2 x (14 x 4))
= 400 - 72 - 112
= 216 cm
2 Answer(s): (a) 108 cm; (b) 216 cm
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