document.write( "Question 936388: Please help me solve this problem:\r
\n" ); document.write( "\n" ); document.write( "A cyclic quadrilateral has sides 5 cm, 4 cm, 7 cm, and 10 cm. Find the area of the quadrilateral. Find also the radius of the circumscribed circle. \n" ); document.write( "
Algebra.Com's Answer #569900 by AnlytcPhil(1806)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "The other tutor doesn't understand the problem.  He doesn't\r\n" );
document.write( "know that a cyclic quadrilateral is a quadrilateral with all\r\n" );
document.write( "four vertices lying on a circle:\r\n" );
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document.write( "We use Brahmagupta's formula to find the area of\r\n" );
document.write( "the cyclic quadrilateral.\r\n" );
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document.write( "\"A=sqrt%28%28s-a%29%28s-b%29%28s-c%29%28s-d%29%29\" where \"semiperimeter=s=%28a%2Bb%2Bc%2Bd%29%2F2\",\r\n" );
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document.write( "and \r\n" );
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document.write( "a=5, b=4, c=7, and d=10\r\n" );
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document.write( "\"s=%28a%2Bb%2Bc%2Bd%29%2F2=%285%2B4%2B7%2B10%29%2F2=26%2F2=13\"}}}\r\n" );
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document.write( "To find the radius.\r\n" );
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document.write( "Parameshvara's formula for the radius of the circumscribed circle is\r\n" );
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document.write( "We have already calculated the denominator above as 1296, so we have\r\n" );
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document.write( "Edwin
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