document.write( "Question 498590: Hi, trying to help my son grd 8 solve a question
\n" ); document.write( "the hypotenuse of a right triangle is square root of 18....what are the lenghts of the legs of the triangle ??
\n" ); document.write( "that is all the info we are given.
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Algebra.Com's Answer #337102 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
You must have been given more information about the right triangle.
\n" ); document.write( "Look!
\n" ); document.write( "\"a%5E2%2Bb%5E2+=+c%5E2\" In this case, \"c+=+sqrt%2818%29\" so \"c%5E2+=+18\". Now we have:
\n" ); document.write( "\"a%5E2%2Bb%5E2+=+18\" This equation has an infinite number of solutions unless you place some restrictions on a and b.
\n" ); document.write( "Let's assume the the numbers a and b must be integers (not an unreasonable assumption), then a and b can only take on the values of \"highlight%28a+=+3%29\" and \"highlight%28b+=+3%29\", so you'd get:
\n" ); document.write( "\"3%5E2%2B3%5E2+=+18\" or
\n" ); document.write( "\"9%2B9+=+18\"
\n" ); document.write( "This implies that the triangle is an isosceles right triangle.
\n" ); document.write( "No other integers for a and b would work.
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