Question

Find the radius of the sphere whose volume is numerically equal to its surface area also find its volume

Answer 1

volume of sphere is 4/3πr^3

surface area of sphere is 4πr^2

given -:

volume of sphere = surface area of sphere

4/3πr^3 =4πr^2

=> r = 3

volume of sphere = 4/3πr^3

put the value of r

=4/3*22/7*3^3

= (4*22*9)/7

= 113.1

Answer 2

So, the answer is 3 units.