Question

The figure shows the path of a track. It consists of a semicircular arc BCD and three sides of a rectangle in which AB = 20 cm, AE = 14 cm and DE= 20 cm.
Taking $\pi$ to be 22/7 , Calculate

(a) the area of the figure
(b) the length of semicircular arc BCD

Answer 1

$\large \mathcal{Answer}$

A. Area of given figure = 280 + 77 = 357 cm²

B. length of semicircle = 22 cm