document.write( "Question 175482: Please, i need your help to understand how to solve the measurement of the hypotenuse. I understand a^2+b^2=c^6, but i dont understand how to solve for a missing side when rationalized into a radical. \r
\n" ); document.write( "\n" ); document.write( "for example, a=18 b=? c=33\r
\n" ); document.write( "\n" ); document.write( "i know it should be 324+b^2=1089
\n" ); document.write( " -324
\n" ); document.write( " b^2=765\r
\n" ); document.write( "\n" ); document.write( "but what do i do next?\r
\n" ); document.write( "\n" ); document.write( "i would greatly appreciate it if you helped me. thank you.
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Algebra.Com's Answer #130556 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "We basically have this triangle set up (note: you can rearrange the triangle):\r
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\n" ); document.write( "\n" ); document.write( "Since the legs are \"18\" and \"x\" this means that \"a=18\" and \"b=x\"\r
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\n" ); document.write( "\n" ); document.write( "Also, since the hypotenuse is \"33\", this means that \"c=33\".\r
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\n" ); document.write( "\n" ); document.write( "\"a%5E2%2Bb%5E2=c%5E2\" Start with the Pythagorean theorem.\r
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\n" ); document.write( "\n" ); document.write( "\"18%5E2%2Bx%5E2=33%5E2\" Plug in \"a=18\", \"b=x\", \"c=33\" \r
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\n" ); document.write( "\n" ); document.write( "\"324%2Bx%5E2=33%5E2\" Square \"18\" to get \"324\".\r
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\n" ); document.write( "\n" ); document.write( "\"324%2Bx%5E2=1089\" Square \"33\" to get \"1089\".\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2=1089-324\" Subtract \"324\" from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2=765\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"x=sqrt%28765%29\" Take the square root of both sides. Note: only the positive square root is considered (since a negative length doesn't make sense).\r
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\n" ); document.write( "\n" ); document.write( "\"x=3%2Asqrt%2885%29\" Simplify the square root. (note: If you need help with simplifying square roots, check out this solver)\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the solution is \"x=3%2Asqrt%2885%29\" which approximates to \"x=27.659\".
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