Amanufacture drills a hole through the center of a metal sphere of radius R. The hole has a radius r. If R= 6, what value of r will produce a ring whose volume is exactly half the volume of the sphere? A r=_ will prduce a ring with a radius equal to half that of the orginal sphere.

A manufacturer drills a hole through the center of a metal sphere of radius R. The hole has a radius r. Find the volume of the resulting ring. 65. For the metal sphere in Exercise 64, let R = 5. Wha t value of r will produce a ring whose volume is exactly half the volume of the sphere? 66. The solid shown in the figure has cross sections .

Step-by-step explanation:

I believe it would be $12*$8(x hours)= 

Because you have to pay them $12 no matter what but the number of hours you use depends on how much more you have to give them

So for example I only wanted to go for 5 hours that means

I pay him $12*$8(5)=$52

You can also set your equation up like that too.