What is the rate of change of the volume of a sphere with respect to the radius when the radius is

问题描述:

What is the rate of change of the volume of a sphere with respect to the radius when the radius is

V=(4/3)*pi*r^3
这里pi就是那个等于3.1415926的那个符号,我就照拼音打了;
r^3=r*r*r