What is the volume in cubic feet of one cubic yard?

One cubic yard is equivalent to the volume of a cube that measures one yard on each side. Since there are 3 feet in a yard, the dimensions of the cube in feet would be 3 feet by 3 feet by 3 feet. To calculate the volume of the cube, you multiply the length, width, and height together:

3 ft × 3 ft × 3 ft = 27 cubic feet.

This understanding of cubic measurement shows why one cubic yard corresponds to 27 cubic feet. Therefore, the correct answer reflects this conversion accurately, demonstrating that the calculation stems from foundational understanding of volume and dimensional measurements in feet and yards.