Given the figure that is not drawn to scale, find
- its perimeter.
- its area.
(a)
Perimeter of the figure
= (4 x 15) + (4 x 2) + (4 x 4)
= 60 + 8 + 16
= 84 cm
(b)
Length of AB
= 15 - 4 - 4
= 7 cm
Length of CD
= 15 - 2 - 2
= 11 cm
Area of the figure
= (15 x 15) - (2 x (7 x 2)) - (2 x (11 x 4))
= 225 - 28 - 88
= 109 cm
2 Answer(s): (a) 84 cm; (b) 109 cm
2