Question

find the volume of cone .whose radius is 9 and height is 7

Answer 1

volume of cone = 1/3 x pi r^2 x h
                          = 1/3 x 22/7 x 81 x 7
                         =1782/3
                        = 594 $cm^{3}$

Answer 2

πr²h/3
22/7x9²x7/3
594cm³