document.write( "Question 336572: From a rectangle , corner is cut in triangular shape to give a pentagon . The length of the sides are 13,19,20,25 and 31 in cm . lengths are not in order . find the area of the pentagon.
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Algebra.Com's Answer #241247 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! From a rectangle , corner is cut in triangular shape to give a pentagon . \n" ); document.write( " The length of the sides are 13,19,20,25 and 31 in cm . lengths are not in order \n" ); document.write( " . find the area of the pentagon. \n" ); document.write( ": \n" ); document.write( "I assigned the dimensions as follow: \n" ); document.write( "starting with the hypotenuse of the triangle = 13 \n" ); document.write( "the remaining part of that side = 19 \n" ); document.write( "bottom = 25 \n" ); document.write( "vert side = 31 \n" ); document.write( "top = 20 \n" ); document.write( ": \n" ); document.write( "Find the area of the rectangle without the triangle removed \n" ); document.write( "25 * 31 = 775 \n" ); document.write( ": \n" ); document.write( "The triangle dimensions: 5 by 12 by 13, \n" ); document.write( "prove it is a right triangle: \n" ); document.write( "A = .5 * 5 * 12 = 30 \n" ); document.write( ": \n" ); document.write( "Pentagon area: 775 - 30 = 745 \n" ); document.write( " |