Answer: y^3, 729 feet^3
Explanation:
We know that volume of a cube is the edge raised to 3. (edge^3)
Therefore when the edge is “y”,
The Volume of the Cube = y^3
When y = 9, the Volume of the Cube is
= 9 * 9 * 9
= 81 * 9
= 729
Therefore, Volume of Cube is 729 feet^3