document.write( "Question 1177486: In parallelogram ABCD, AB=125cm, AD=132cm, and the length of diagonal AC is 37cm. The area of the parallelogram, in cm squared, is
\n" );
document.write( "a) 1155 b) 2310 c) 2442 d)4620 e)4884 \n" );
document.write( "
Algebra.Com's Answer #806494 by greenestamps(13203) You can put this solution on YOUR website! \n" ); document.write( "Draw perpendicular AE from A to side CD. \n" ); document.write( "Let CE=x so BE=132-x; let the length of AE be y. \n" ); document.write( "Then right triangles AEC and AEB give us \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Expand [2]: \n" ); document.write( " \n" ); document.write( "Subtract [1] from [3]: \n" ); document.write( " \n" ); document.write( "Use a calculator and basic algebra to find x; then use [1] to find y. \n" ); document.write( "Then the area of the parallelogram is base times height, which is 132 times y. \n" ); document.write( "One of the given answer choices is correct.... \n" ); document.write( " \n" ); document.write( " |