# geometry

Find the perimeter of an isosceles trapezoid with base lengths of 10 and 18 and height of 8.

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1. The top and bottom sides contribute 28 to the perimeter.

The two slanted sides have lengths that are the hypotenuses of a triangles with sides of 4 and 8. The hypotenuse is sqrt 80 = 8.944.

That makes the perimeter
28 + 2*8.944 = 45.89

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posted by drwls

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