document.write( "Question 709468: Find the length of a radius of a circle such that the circumference of the circle is numerically equal to the area of the circle.
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Algebra.Com's Answer #436589 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Find the length of a radius of a circle such that the circumference of the circle is numerically equal to the area of the circle. \n" ); document.write( "----------------------- \n" ); document.write( "C = (pi)(2r) \n" ); document.write( "A = (pi)r^2 \n" ); document.write( "------ \n" ); document.write( "Equation: \n" ); document.write( "(pi)(2r) = r^2 \n" ); document.write( "------- \n" ); document.write( "2r = r^2 \n" ); document.write( "--- \n" ); document.write( "r^2-2r = 0 \n" ); document.write( "r(r-2) = 0 \n" ); document.write( "Positive solution: \n" ); document.write( "radius = 2 \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================= \n" ); document.write( " |