question_answer

The numerical values of the volume and the area of the lateral surface of a right circular cone are equal. If the height of the cone be h and radius be r, the value of \[1/{{h}^{2}}+1/{{r}^{2}}\]  will be

A)  3/1                              

B)  1/9

C)  9/1                              

D)  1/3

E)  None of these