(algebra 2) A woodmaker uses different sizes of wooden blocks in the shapes of cones. The narrowest block the worker makes has a radius r=8 centimeters and a height h=22 centimeters. For each centimeter increase in the radius, the worker decreases the height of the cone four centimeters. Create a function to find the volume of the cone. (x represents the number of cm the worker increases the radius by, while v(x) represents the volume of each cone)