question_answer

A shuttlecock used for playing badminton has the shape of a frustum of a cone mounted on a hemisphere. The external diametres of the frustum are 5 cm and 2 cm and the height of the entire shuttlecock is 7 cm. Find its external surface area.

A)  \[18.39\,c{{m}^{2}}\]            

B)  \[37.13\,c{{m}^{2}}\]

C)  \[74.27\,c{{m}^{2}}\]            

D)  \[82.56\,c{{m}^{2}}\]

E)  None of these