document.write( "Question 1105622: If the cost of making a leather ball is Rs. 431.20 at Rs. 17.50 per square cm. Let us write by calculating the length of diameter of the ball. \n" ); document.write( "
Algebra.Com's Answer #720502 by stanbon(75887) ![]() You can put this solution on YOUR website! If the cost of making a leather ball is Rs. 431.20 at Rs. 17.50 per square cm. Let us write by calculating the length of diameter of the ball. \n" ); document.write( "----- \n" ); document.write( "Number of square centimeters = 431.2/17.5 = 24.64 \n" ); document.write( "------ \n" ); document.write( "Surface Area = 4*pi*r^2 \n" ); document.write( "------ \n" ); document.write( "Solve for \"r\"\": \n" ); document.write( "4pi*r^2 = 24.64 \n" ); document.write( "r = 1.96 cm \n" ); document.write( "Ans: Diameter = 2*1.96 = 3.92 cm \n" ); document.write( "------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "---------------- \n" ); document.write( " |