Given the figure that is not drawn to scale, find
- its perimeter.
- its area.
(a)
Perimeter of the figure
= (4 x 20) + (4 x 4) + (4 x 5)
= 80 + 16 + 20
= 116 cm
(b)
Length of AB
= 20 - 5 - 5
= 10 cm
Length of CD
= 20 - 4 - 4
= 12 cm
Area of the figure
= (20 x 20) - (2 x (10 x 4)) - (2 x (12 x 5))
= 400 - 80 - 120
= 200 cm
2 Answer(s): (a) 116 cm; (b) 200 cm
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