87. Storage Container A liquid storage container on a truck is in the shape of a cylinder with hemispheres on each end as shown in the figure. The cylinder and hemispheres have the same radius. The total length of the container is 140 ft .
(a) Determine the volume V of the container as a function of the radius x.
(b) Graph the function y=V(x).
(c) What is the radius of the container with the largest possible volume? What is the volume?
