A balloon, which always remains spherical, has a variable

Last updated: 7/19/2022

A balloon, which always remains spherical, has a variable radius. If the radius is increasing at the rate of 3 units/sec then find the rate at which its volume is increasing with respect to time when its radius is 12 units Note that the volume of the sphere is given by V=4/3 π r^3 A) 48π units^3 / sec C) 576 π units^3 / sec D) 1728π units^3 / sec B) 144π units^3 / sec