document.write( "Question 480857: A 21 inch square TV is on sale at the local electronics store. If 21 inches is the measure of the diagonal of the screen, use the Pythagorean theorem to find the length of the side of the screen. \n" ); document.write( "

Algebra.Com's Answer #329259 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "A 21 inch square TV is on sale at the local electronics store.
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document.write( "Let x represent the length of the side of the screen
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document.write( "Using the Pythagorean theorem:
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document.write( "  x^2 + x^2 = 21^2
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document.write( "   2x^2 = 441
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document.write( "    x^2 = 220.5
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document.write( "      x = sqrt(220.5) =  14.85in \n" );
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