document.write( "Question 1036057: The front of an A-frame cabin in a national park is in the shade of a triangle, with an area of 189 ft^2. If the height is 1 ft less than twice the base, find the base and the height of the front of the cabin?
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Algebra.Com's Answer #650652 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! The area of a triangle is of course \n" ); document.write( " \n" ); document.write( "Here A = 189 and h = 2b - 1...plugging in gives us \n" ); document.write( "189 = (1/2)(b)(2b-1) \n" ); document.write( "378 = 2b^2 - b \n" ); document.write( "2b^2 - b - 378 = 0 \n" ); document.write( "and if you solve this you get \n" ); document.write( "(2b + 27)(b - 14)=0 and \n" ); document.write( "b = 14 or b = -13.5 \n" ); document.write( "The base has to be 14 ft and the height is 2(14)-1 = 27 ft. \n" ); document.write( " |