The Volume of a Polygon Based Pyramid Frustum calculator computes the volume of the frustum of right 
Frustum of Pyramidpyramid with two regular polygon bases (top and bottom) with the same number of sides (n) separated by a height (h).
INSTRUCTIONS: Choose units and enter the following:
- (n) The number of sides on the polygons
- (b) The length of the sides on the top polygon
- (B) The length of the sides on the base polygon
- (h) The height between the top and bottom polygons
Pyramid Volume (V): The calculator returns the volume (V) in cubic meters (m3). However, this can be automatically converted to other volume units (e.g. cubic feet, gallons or liters) via the pull-down menu.
The Math
The top and base polygons are defined by the number of sides (n) and the equal side lengths of b and B of the two polygons respectively (see diagram).
The formula for the volume of a polygon pyramid frustum is:
V = n⋅h/12⋅(b2+b⋅B+B2)⋅cot(π/n)
where:
- V is the volume of the polygon pyramid frustum
- n is the number of sides of the polygon
- b is the length of the sides on the top polygon
- B is the length of the sides on the bottom polygon
Pyramid Calculators
- Volume of a Pyramid
- Mass or Weight of a Pyramid
- Volume of a Frustum of a Pyramid
- Mass of a Frustum of a Pyramid
- Volume of a Polygon Based Pyramid
- Mass of a Polygon Based Pyramid
- Volume of a Frustum of a Polygon Based Pyramid
- Mass of a Frustum of a Polygon Based Pyramid
- Mean Density of Many Substances: The Mean Density Lookup equation provides the mean density of hundreds (650+) substances from metals to gases, woods, food, liquids and much more. The results of the Mean Density look-up are in kg/m3. Use the answer for the substance you choose in the mass equation to approximate the mass or weight of the pyramid shaped object based on its shape, dimensions and the mean density of its composition.
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