How much metal is needed to cast a cubical metal box with outer side 10 inches long if the thickness of its walls should be exactly 2 inches?
1 Answer
It would take
Explanation:
Find the volume of the box if the box was solid:
If the side of the cube is 10 inches, and the width of the walls is 2 inches, then the width of the cube of air inside of the box is
The volume of that box is
Thus, the amount of metal to cast the box is