Given the figure that is not drawn to scale, find
- its perimeter.
- its area.
(a)
Perimeter of the figure
= (4 x 20) + (4 x 2) + (4 x 4)
= 80 + 8 + 16
= 104 cm
(b)
Length of AB
= 20 - 4 - 4
= 12 cm
Length of CD
= 20 - 2 - 2
= 16 cm
Area of the figure
= (20 x 20) - (2 x (12 x 2)) - (2 x (16 x 4))
= 400 - 48 - 128
= 224 cm
2 Answer(s): (a) 104 cm; (b) 224 cm
2