Question

if the volume of k a sphere is numerically equal to its surface area, then find its diameter​

Answer 1

given volume = k

surface area of a sphere = 4*pi*r^2

equate these both

4*pi*r^2=k

r^2=k/4*pi

r=√k/4*pi

diameter is twice of radius

so diameter d = 2√k/4*pi

hope this helps