Your neighbor is growing a slightly different watermelon. It also has a rind whose thickness is one tenth of the radius of that watermelon. However, the rind of your neighbor's water melons grows at a
constant
rate of 20 cubic centimeters a week. The radius of your neighbor's watermelon after weeks is
and at that time it is growing at
centimeters per week.
You can earn partial credit on this problem.