Goran's company makes solid balls out of scrap metal for various industrial uses. for one project, he must make aluminum balls that have a radius of 7.5 . if aluminum costs $0.12 per in³, how much will the aluminum cost to make one ball?
use 3.14 for π , and do not round your answer.

Step-by-step explanation:

For this exercise it is important to remember the following formula, which is used to calculate the volume of a sphere:

Where "r" is the radius of the sphere.

You know that the radius of one of those aluminum balls is:

Then, subsituting this value into the formula and using , you get that its volume is:

Since of aluminum costs $0.12, you need to multiply the volume calculated by $0.12 in order to find how much the aluminum will cost to make one ball. This is: