Topic: related rates

I need your help with this AP calculus question. please solve the question in thorough manner and send me the answer in a pdf file

Please use camscanner to capture your work.

A sculptor uses a constant volume of modeling clay to form a cylinder with a large height and a relatively small radius. The clay is molded in such a way that the height of the clay increases as the radius decreases, but it retains its cylindrical shape. At time t = c, the height of the clay is 8 inches, the radius of the clay is 3 inches, and the radius of the clay is decreasing at a rate of 12 inch per minute. (a) At time t = c, at what rate is the area of the circular cross section of the clay decreasing with respect to time? Show the computations that lead to your answer. Indicate units of measure. (b) At time t = c, at what rate is the height of the clay increasing with respect to time? Show the computations that lead to your answer. Indicate units of measure. (The volume V of a cylinder with radius r and height h is given by V=Trr2h .)