document.write( "Question 448383: ABC is a right triangle whose hypotenuse AC is 8 inches long. Given that the area of ABC is 13.9 square inches, find the area of similar DEF whose hypotenuse DF is 20 inches long. \n" ); document.write( "
Algebra.Com's Answer #308560 by edjones(8007)\"\" \"About 
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.5ab=13.9
\n" ); document.write( "a=27.8/b
\n" ); document.write( "a^2+b^2=8^2
\n" ); document.write( "(27.8/b)^2+b^2=64
\n" ); document.write( "(772.82/b^2)+b^2=64
\n" ); document.write( "772.82+b^4=64b^2
\n" ); document.write( "b^4-64b^2+772.82=0
\n" ); document.write( "b=4.02, a=6.92 (or vice versa) TI-89 calculator
\n" ); document.write( "4.02* 20/8 = 10.05
\n" ); document.write( "6.92* 20/8 = 17.3
\n" ); document.write( ".5*10.05*17.3=86.9 in^2
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