# Lampshade

The cone-shaped lampshade has a diameter of 30 cm and a height of 10 cm. How many cm

^{2}of material will we need when we 10% is waste?### Correct answer:

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Pythagorean theorem is the base for the right triangle calculator.

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Pythagorean theorem is the base for the right triangle calculator.

See also our trigonometric triangle calculator.

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