document.write( "Question 820323: the inner circumference of track is 220 meter. the track is 7 meter wide everywhere. calculate the cost of putting up fence along the outer circle at the rate of rupees 2 per meter. \n" ); document.write( "
Algebra.Com's Answer #493980 by LinnW(1048)![]() ![]() You can put this solution on YOUR website! Steps to solve. \n" ); document.write( "1) Find the radius r of the inner circle. \n" ); document.write( "2) Find the radius R of the outer circle. \n" ); document.write( "3) Find a formula for the outer circumference O . \n" ); document.write( "4) Multiply O to give us the amount in rupees.\r \n" ); document.write( "\n" ); document.write( "1) Use the formula for circumference C = (pi)(2r) \n" ); document.write( "C = (pi)(2r) \n" ); document.write( "divide each side by (pi) \n" ); document.write( "C/(pi) = 2r \n" ); document.write( "divide each side by 2 \n" ); document.write( "C/(2(pi)) = r\r \n" ); document.write( "\n" ); document.write( "2) R, the outer radius = r + 7 = C/(2(pi)) + 7 \n" ); document.write( "3) O, the outer circumference = (pi)*(2R) = \n" ); document.write( "or \n" ); document.write( "4) Multiply by 2 to give us the number of rupees \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |