document.write( "Question 589343: if the circumference of a circle is 16 cm .what is the area? \n" ); document.write( "
Algebra.Com's Answer #374824 by nyc_function(2741)![]() ![]() You can put this solution on YOUR website! The circumference of a circle is the perimeter of the circle.\r \n" ); document.write( "\n" ); document.write( "We must use the formula C = 2pir to find the radius of the circle as step one.\r \n" ); document.write( "\n" ); document.write( "The circumference is given to be 16cm.\r \n" ); document.write( "\n" ); document.write( "In that case, let C = 16 and solve for r. In other words, we are searching for the radius.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "C = 2pir\r \n" ); document.write( "\n" ); document.write( "16 = 2pir\r \n" ); document.write( "\n" ); document.write( "16/2pi = r\r \n" ); document.write( "\n" ); document.write( "(8/pi) = r\r \n" ); document.write( "\n" ); document.write( "Now that we know the value for r (our radius), we use the formula for finding the area of the circle.\r \n" ); document.write( "\n" ); document.write( "The formula for finding the area of a circle is: A = pi(r^2)\r \n" ); document.write( "\n" ); document.write( "Let r = (8/pi)\r \n" ); document.write( "\n" ); document.write( "A = pi(8/pi)^2\r \n" ); document.write( "\n" ); document.write( "A = pi(64/(pi)^2\r \n" ); document.write( "\n" ); document.write( "A = (64/pi)cm^2\r \n" ); document.write( "\n" ); document.write( "Did you follow or are you still lost? \n" ); document.write( " |