document.write( "Question 84023: Please help me with this one! Find the area of a trapezoid ABCD, if m Ang A = m Ang D = 60 degrees, AD = 10, BC = 8. Thanks! \n" ); document.write( "

Algebra.Com's Answer #60470 by Nate(3500) $\"\"$ $\"About$

You can put this solution on YOUR website!
AD being the bottom base
\n" ); document.write( "BC being the top base
\n" ); document.write( " $\"%281%2F2%29%28h%29%28base1+%2B+base2%29\"$
\n" ); document.write( " $\"%281%2F2%29%28h%29%288+%2B+10%29\"$
\n" ); document.write( " $\"%281%2F2%29%28h%29%2818%29\"$
\n" ); document.write( " $\"9h\"$
\n" ); document.write( "What is the height? ....
\n" ); document.write( "You can make a 30-60-90 triangle using angle A and angle B.
\n" ); document.write( "Opposite the 30 degree angle is 1 unit long.
\n" ); document.write( "Opposite the 60 degree angle (height) should be $\"sqrt%283%29\"$ units long.
\n" ); document.write( "~ Using 30-60-90 rule ~
\n" ); document.write( " $\"9%2Asqrt%283%29\"$ \n" ); document.write( "

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