document.write( "Question 1073740: Given a side length of 18 inches, find the height of a stop sign rounded to the nearest tenth \n" ); document.write( "
Algebra.Com's Answer #688546 by Fombitz(32388)\"\" \"About 
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\n" ); document.write( "\"H=18%2B2X\"
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\n" ); document.write( "The interior angles of the octagon are 135 degrees.
\n" ); document.write( "So the X-X-18 triangle is a 45-45-90 triangle so then,
\n" ); document.write( "\"X%5E2%2BX%5E2=18%5E2\"
\n" ); document.write( "\"2X%5E2=18%5E2\"
\n" ); document.write( "\"X=18%2Fsqrt%282%29\"
\n" ); document.write( "So,
\n" ); document.write( "\"H=18%2B36%2Fsqrt%282%29\"
\n" ); document.write( "\"H=18%2B18sqrt%282%29\"
\n" ); document.write( "\"H=18%281%2Bsqrt%282%29%29\"\"in\"
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