The instantaneous rate of change of the volume V of a sphere with respect to its radius r can be expressed as (dV) / (dr) = a(V / r). What is a? Recall that the volume formula for a sphere is V=(4 / 3)πr^3. Show all your work.

The instantaneous rate of change of the volume V of a sphere with respect to its radius r can be expressed as dV dr aV r What is a Recall that the volume formul class=