The formula for a pyramid. The volume of a pyramid is (1/3)(B)(h). The volume of a cone is essentially the same: (1/3)(B=πr2)(h)
Wouldn't a circle-based pyramid look a lot like a cone ? If so, you could probably use the formula for the volume of a cone and get away with it.
Because the formula is the same: volume = 1/3base areaheight
The relationship between the formulas is that in all the radius is cubed.
In both cases, the formula for volume is 1/3 times the base area times the height.
Vol = 1/3 * base area x vertical height for any pyramid (or cone).
The volume is equal to 1/3 times the base area times the height. Incidentally, that's the same formula for the pyramid.
Volume of a cone = 1/3*base area*height
There is no single formula for volume. Some simple shapes, such as a cuboid, sphere, cone, pyramid, prism have relatively simple, but different formulae. Other shapes have more complicated formulae.
Volume of a cone = 1/3*pi*radius2*height
The volume of a cone is one third the volume of a cylinder of the same height. The volume of a cylinder is πr2h, so the volume of a cone is 1/3πr2h.