# The bus stop

The bus stop waiting room has the shape of a regular quadrilateral pyramid 4 m high with a 5 m base edge. Calculate how much m

^{2}roofing is required to cover the sheathing three walls, taking 40% of the additional coverage.### Correct answer:

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Pythagorean theorem is the base for the right triangle calculator.

See also our trigonometric triangle calculator.

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