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Find the diagonal (d) of the base

Find the diagonal (d) of the base-example-1

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Answer:


4√(5)\ un.

Explanation:

The picture shows rectangular prism with rectangular base and heigth h. The dimenssions of base rectangle are l and w.

The diagonal of reactangle with known length l and width w can be calculated using the Pythagorean theorem:


d^2=l^2+w^2,\\ \\d^2=8^2+4^2,\\ \\d^2=64+16,\\ \\d^2=80,\\ \\d=4√(5)\ un.

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