document.write( "Question 342879: if a rectangle has width of 5 and diagonal with lenght of 13, what is the area of the rectangle? \n" ); document.write( "

Algebra.Com's Answer #245418 by nerdybill(7384) $\"\"$ $\"About$

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if a rectangle has width of 5 and diagonal with lenght of 13, what is the area of the rectangle?
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\n" ); document.write( "find the length by applying Pythagorean theorem:
\n" ); document.write( "Let x = length
\n" ); document.write( "then
\n" ); document.write( "x^2 + 5^2 = 13^2
\n" ); document.write( "x^2 = 13^2 - 5^2
\n" ); document.write( "x^2 = 169 - 25
\n" ); document.write( "x^2 = 144
\n" ); document.write( "x = 12
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\n" ); document.write( "area = 5*12 = 60 square units
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