The correct response is:
"Since the base of the cone is a circle, the volume formula uses the area of a circle for the base area."
This highlights the key difference where the base shape of a cone (a circle) requires the use of the formula for the area of a circle (πr²) in its volume calculation, whereas a pyramid’s base can be any polygon, and the volume formula uses the area of that polygon. The volume formulas themselves do share the same overall structure, being V = (1/3) * base area * height, but the specific base area calculation differs depending on the shape of the base.