A spherical balloon is being inflated. Find the rate of increase of the surface area $S = 4 \pi r ^ { 2 }$ with respect to the radius $r$ when $r = 1 \mathrm { ft }$.

Question

Quizplus · Accepted Answer

The Answer of A spherical balloon is being inflated. Find the rate of increase of the surface area $S = 4 \pi r ^ { 2 }$ with respect to the radius $r$ when $r = 1 \mathrm { ft }$.

A Spherical Balloon Is Being Inflated S=4πr2S = 4 \pi r ^ { 2 }S=4πr2

A Spherical Balloon Is Being Inflated $S = 4 \pi r ^ { 2 }$