document.write( "Question 30628: The area of a rectangle is 20 square feet. write the perimeter of this rectangle as a function of the length of one of its sides,x \n" ); document.write( "

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The area of a rectangle is 20 square feet. write the perimeter of this rectangle as a function of the length of one of its sides,x\r
\n" ); document.write( "\n" ); document.write( "The length of the rectangle is x ft
\n" ); document.write( "Let the width be y ft
\n" ); document.write( "Given that the area of the rectangle is 20 sq ft
\n" ); document.write( "This is (xy) = 20
\n" ); document.write( "Dividing by x,we get the width y given by
\n" ); document.write( "y = 20/x ft
\n" ); document.write( "The perimeter of the rectangle = 2(length+width)
\n" ); document.write( "=2(x+20/x)
\n" ); document.write( "=2(x^2+20)/x ft
\n" ); document.write( "Answer: The perimeter of the rectangle = [2(x^2+20)/x] \n" ); document.write( "

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