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Q: Formula of pyramid

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The derivation of the formula of pyramid can be gained easily based on the formula for a triangular prism. A pyramid is like two prisms joined together.

xyz2

The answer depends on the what characteristic of the pyramid you want the formula for: its surface area, its volume or something else.

The formula for finding the volume for a triangular pyramid is half base x height x length. A triangular pyramid has four faces.

base*width*height

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from a pyramid

== V== 1BH == ----

The formula for a square pyramid is one square attached to four triangles which meet at a point.There are other formulae for the surface area or for the volume.

The volume of a regular pyramid is 1/3*area of the base*hight

first you find the area of the base and then you find the area one side of the pyramid an you time it with 3 if it is a triangular pyramid or 4 if it is a square pyramid

V = (1/3)a2h

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