document.write( "Question 271760: A parallelogram with a perimeter of 20 yards has a height of 3 yrds. Tammy does not know how many yards the base is, but se does know that the side adjoining the base is 4 yrds. What is the area of the parallelogram?\r
\n" ); document.write( "\n" ); document.write( "I know the answer is to be 18yds, but I do not know whow to get it to explane to my 11 year old son.
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Algebra.Com's Answer #198925 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
the opposite sides of a parallelogram are parallel AND equal\r
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\n" ); document.write( "\n" ); document.write( "\"the side adjoining the base is 4 yrds\" ___ so the opposite side is also 4 yds
\n" ); document.write( "___ the two sides sum to 8 yds (4 + 4)
\n" ); document.write( "___ this leaves 12 yds (20 - 8) for the other two sides ___ they are 6 yds (12 / 2) each\r
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\n" ); document.write( "\n" ); document.write( "so the base of the parallelogram is 6 yds and the height is given as 3 yds
\n" ); document.write( "___ area is base times height or 18 yd^2
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