SOLUTION: A triangle has side lengths 20, 21 and 29. Find the radii of the inscribed and circumscribed circles

Question 350077: A triangle has side lengths 20, 21 and 29. Find the radii of the inscribed and circumscribed circles

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Hi,
Note: Area of a triangle = where a,b,c are the lengths of the sides and s is the semiperimeter:
s = 1/2(20+21+29) = 35
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Note: Area of a triangle = , where a, b and c are lengths of the sides of the triangle and R is the radius of the circle circumscribing the triangle

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the radius of the circumscrbed circle
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Note: radius of the incsribed cirle = A/s, where s is the semiperimeter
radius of the inscribed circle
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