In the given cross-section: CE = 20 cm, BC = 25 cm, AB = GF = 13 cm, AG = 10 cm and AN = 12 cm
The area of the semi- circular part of the cross section, is

Options

A. `pi sq cm`
B. `10 pi sq cm`
C. `50 pi sq cm`
D. `100 pi sq cm`

Answer

D