Radius of a circle?!? :/?

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Radius of a circle?!? :/?

In the diagram below, a cirlce is inscribed in an isoseles trapezoid whose parallel sides have lengths 8 and 12, as indicated. What is the radius of the circle?

2007-02-24 08:17:51 · 2 answers · asked by Angel 2 in Science & Mathematics ➔ Mathematics

sry, the lengths are 8 and 18 not 8 and 12

2007-02-24 08:19:12 · update #1

2 answers

In order for the circle to be inscribe in the isosceles triangle, the median of the trapezoid must equal the height. So height (8+18)/2 =13.
Since the height is also the diameter of the circle, the radius must be 13/2 = 6.5.

2007-02-24 08:42:01 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋

Try posting the question. That link isn't opening

2007-02-24 16:21:16 · answer #2 · answered by do you smell..... what's coo 4 · 0⤊ 0⤋