document.write( "Question 198326: PROBLEM: \r
\n" ); document.write( "\n" ); document.write( "The Vang family has a backyard with the dimensions of 35ft, 75ft, 90ft. They want to plant small trees that require 9 square feet of surface area each. How many should they plant? Round your answer to the nearest whole tree.\r
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Algebra.Com's Answer #148818 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
Because this is not a right triangle.
\n" ); document.write( "35^2+75^2 does not = 90^2
\n" ); document.write( "1225+5625 does not = 8100
\n" ); document.write( "6850 does not = 8100
\n" ); document.write( "The folowing formula for area is used:
\n" ); document.write( "A=SQRT(S-A)(S-B)(S-C)
\n" ); document.write( "WHERE S=(A+B+C)/2=(35+75+90)/2=200/2=100
\n" ); document.write( "A=SQRT(100-35)(100-75)(100-90)
\n" ); document.write( "A=SQRT(65*25*10)
\n" ); document.write( "A=SQRT16250
\n" ); document.write( "A=127 FT^2
\n" ); document.write( "127/9=14 TREES CAN BE PLANTED.
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