Question

piece of text uses this meaning of volume?
volume noun the amount of space that a three-dimensional object takes up
\wait, i cant hear you,\ fred said into his cell phone. \let me turn up the volume.\
to calculate the volume of a pyramid, multiply the area of the base by the height and then divide by three.

Explanation:

The defined meaning of "volume" refers to the space a 3D object occupies. The first text uses "volume" to mean sound loudness, while the second text refers to the 3D space measurement of a pyramid, matching the given definition.

Answer:

"To calculate the volume of a pyramid, multiply the area of the base by the height and then divide by three."