Geometry

viren_t2005

Let ABCD be a cyclic quadrilateral & R the radius of the circumcircle.Let a,b,c,d be the lengths of the sides of ABCD &Q its area.Prove that R >={(abcd)^3/4}/Q^1/2

BerkMath

Check out this link. It gives you everything you need to solve the problem. My only advice would be to use something that can store and calculate long symbolic expressions. I used Matlab.

http://mathworld.wolfram.com/CyclicQuadrilateral.html

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viren_t2005	Geometry Let ABCD be a cyclic quadrilateral & R the radius of the circumcircle.Let a,b,c,d be the lengths of the sides of ABCD &Q its area.Prove that R >={(abcd)^3/4}/Q^1/2

BerkMath	Check out this link. It gives you everything you need to solve the problem. My only advice would be to use something that can store and calculate long symbolic expressions. I used Matlab. http://mathworld.wolfram.com/CyclicQuadrilateral.html