document.write( "Question 493852: what is the area of a rectangle whose length is 12 and whose diagonal is 13 \n" ); document.write( "

Algebra.Com's Answer #335479 by swincher4391(1107) $\"\"$ $\"About$

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Recall that a diagonal splits a rectangle into two equivalent triangles.\r
\n" ); document.write( "\n" ); document.write( "Let's look at either triangle. We have a side of 12 and a hypotenuse of 13.\r
\n" ); document.write( "\n" ); document.write( "So $\"a%5E2+%2B+b%5E2+=+c%5E2\"$
\n" ); document.write( " $\"a%5E2+%2B+12%5E2+=+13%5E2\"$
\n" ); document.write( " $\"a%5E2+=+25\"$
\n" ); document.write( " $\"a+=+5\"$ \r
\n" ); document.write( "\n" ); document.write( "So the other side of our rectangle is 5, this is our width.\r
\n" ); document.write( "\n" ); document.write( "Recall the area of a rectangle is length * width.\r
\n" ); document.write( "\n" ); document.write( "12*5 = 60 <---- Answer \n" ); document.write( "

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