document.write( "Question 892731: Find the length of the hypotenuse of a right angled triangle , if the other 2 sides measure 9cm and 12cm. \n" ); document.write( "
Algebra.Com's Answer #540769 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
This is when knowing about right triangles pays off.
\n" ); document.write( "You should know that 3,4,5 and 5,12,13 are integer sides of a right triangle.
\n" ); document.write( "All multiples are also right triangles.
\n" ); document.write( "9=3*3
\n" ); document.write( "12=3*4
\n" ); document.write( "so the hypotenuse would be 3*5=15
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