document.write( "Question 448073: Given the circle with center O, radius OA, diameter BC, where OA perpendicular BC, and OA=4cm find the length of AB? \n" ); document.write( "

Algebra.Com's Answer #308413 by Edwin McCravy(20055) $\"\"$ $\"About$

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document.write( "Since OA is 4 and is a radius, and since OB is also a radius,\r\n" );
document.write( "OB = 4 too. The Pythagorean theorem says\r\n" );
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document.write( "AB² = OA² + OB²\r\n" );
document.write( "AB² = 4² + 4²\r\n" );
document.write( "AB² = 16 + 16\r\n" );
document.write( "AB² = 32\r\n" );
document.write( "AB = Ö32 = Ö(16*2) = 4Ö2 or about 5.657 cm.\r\n" );
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document.write( "Edwin

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