document.write( "Question 388780: an isosceles triangle, whose legs are each 13, is inscribed in a circle. if the altitude to the base of the triangle is 5, find the radius of the circle. \n" ); document.write( "

Algebra.Com's Answer #275205 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "The other tutor's solution is incorrect.\r\n" );
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document.write( "Draw in the radii to the vertices:\r\n" );
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document.write( "Extend the vertical radius down to the base of the given triangle,\r\n" );
document.write( "which we label D, and we let x be the measure of OD\r\n" );
document.write( "dividing the base into two equal parts, each measuring 2.5:\r\n" );
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document.write( "From right triangle BOD  \r\n" );
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document.write( "From right triangle BAD\r\n" );
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document.write( "Ignore the negative:\r\n" );
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document.write( "Substitute  for  in\r\n" );
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document.write( "Add these two equations:\r\n" );
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document.write( "2r = 13.24728445\r\n" );
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document.write( " r = 6.62363632224\r\n" );
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document.write( "Edwin

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