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Math Problem

Name: Anonymous 2008-09-06 12:49

A rectangle and an isosceles triangle are inscribed in a circle with a radius of 1. The rectangle has height, h, and base, b. For what value of h are the areas of the rectangle and triangle the same?

Name: 4tran 2008-09-08 19:35

>>5
I think there's a much easier way to do this problem.
h = rectangle height, H = triangle height, b = shared base

area of rectangle = hb = Hb/2 = area of triangle
h = H/2
2h = H

Draw the perpendicular bisector of the rectangle's height.
It is clear that H = r + h/2

Substituting, 2h = H = r + h/2
3h/2 = r
h = 2r/3

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