document.write( "Question 878440: The base of a triangle is 5 times its height. If the area of the triangle is 360 square centimeters. What is the base of the triangle?
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Algebra.Com's Answer #530020 by JulietG(1812)\"\" \"About 
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The area of a triangle is \"1%2F2\" base * height
\n" ); document.write( "360 = \"1%2F2\" b * h
\n" ); document.write( "Multiply each side by 2
\n" ); document.write( "720 = b * h
\n" ); document.write( "b = 5h
\n" ); document.write( "Substitute the value of B from the second equation into the first.
\n" ); document.write( "720 = (5h) * h
\n" ); document.write( "720 = 5\"h%5E2\"
\n" ); document.write( "Divide each side by 5
\n" ); document.write( "144 = \"h%5E2\"
\n" ); document.write( "Take the square root of each side
\n" ); document.write( "12 = h
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\n" ); document.write( "The height is 12. The base is 5*12, or 60.
\n" ); document.write( "60 * 12 = 720
\n" ); document.write( "\"1%2F2\" of that is 360.
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