\"\"

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The volume of a pyramid is \"\".

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\"\"

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From the diagram base of the pyramid is a rectangle.

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Area of the rectangle is \"\". So, \"\".

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\"\"                  (Sustitute 5 for l and 4 for w)

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\"\"                       (Multiply: \"\")

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\"\".

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\"\"

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\"\"         (Substitute 20 for B and 15 for h)

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\"\"             (Multiply: \"\")

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\"\"                    (Multiply: \"\")\"\"

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The volume of the pyramid is \"\".

\