Question

A cone of height 20 CM and radius of base 5 CM is made up of modelling clay a child reshapes it in the form of a sphere find the diameter of the sphere

Answer 1

1/3*pi*r^2h = 4/3*pi*r^3
 r^3 = 5*5*20/4
 r^3 = 5*5*5
 r = 5 cm
 d=2r
 d = 2*5
 d = 10 cm