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July 25, 2014

Homework Help: Please help with a trapezoid - circle problem

Posted by Knights on Monday, February 18, 2013 at 7:01pm.

A circle with radius 3 is inscribed in a isosceles trapezoid with legs of 10. Find the length of the smaller base.

When I draw a diagram, calling the trapezoid ABCD with A and D at the bottom, I see that the length from where the altitude from B and C hits AC to D is 8 from the pythagorean theorem. But the 6 looks a lot bigger. Also, how to find the smaller base?!

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