document.write( "Question 658742: one side of a triangle has a length of three units. another side of the triangle has a length of four units. the two sides meet at a right angle. How many units long is the thrid side? \n" ); document.write( "

Algebra.Com's Answer #410630 by colliefan(242) $\"\"$ $\"About$

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Since it is a right triangle, you can use the Pythagorean theorem to find the length. That theorem is a^2 + b^2 = c^2, where a and b are the lengths of the legs of the right triangle and c is the length of the hypotenuse.\r
\n" ); document.write( "\n" ); document.write( "Substituting in the values that you are given:\r
\n" ); document.write( "\n" ); document.write( " $\"3%5E2%2B4%5E2=c%5E2\"$
\n" ); document.write( " $\"9%2B16=c%5E2\"$
\n" ); document.write( " $\"25=c%5E2\"$
\n" ); document.write( "c=5\r
\n" ); document.write( "\n" ); document.write( "5 is the length of the hypotenuse. \n" ); document.write( "

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