9'! '2. (ll) pts) Of all rectangles of area 100. which has the smallest perimeter? (Hint.- Write the area and perimeter of a general rectangle with sides x and y, then use the information to nd a objective function.) , 3. (10 points) A spherical snowball melts at a. rate of 36f2 i113/sec. At: what rate is the radius of the snowball changing when the radius is 5 in