document.write( "Question 186817: What is the circumference and area in feet of circular pool that has a diameter of 20 yards? \n" ); document.write( "
Algebra.Com's Answer #140041 by feliz1965(151)![]() ![]() ![]() You can put this solution on YOUR website! Circumference is the perimeter of a circle.\r \n" ); document.write( "\n" ); document.write( "The formula needed to find the circumference is C = pi(d), where pi = 3.14 and d = the given diameter.\r \n" ); document.write( "\n" ); document.write( "C = 3.14 x 20\r \n" ); document.write( "\n" ); document.write( "C = 62.8 yards\r \n" ); document.write( "\n" ); document.write( "We now need to convert 62.8 to feet.\r \n" ); document.write( "\n" ); document.write( "1 yard = 3 feet \n" ); document.write( "How many feet = 62.8 yards?\r \n" ); document.write( "\n" ); document.write( "We divide to find the answer.\r \n" ); document.write( "\n" ); document.write( "62.8 divided by 3 = 20.93\r \n" ); document.write( "\n" ); document.write( "The circumference is 20.93 yards.\r \n" ); document.write( "\n" ); document.write( "The area is found by using the formula A = pi(r^2), where pi is again 3.14 and r represents the radius of the circle.\r \n" ); document.write( "\n" ); document.write( "You were given a diameter of 20 yards.\r \n" ); document.write( "\n" ); document.write( "The radius of a circle is 1/2 the diameter length.\r \n" ); document.write( "\n" ); document.write( "What is 1/2 of 20? It is 10.\r \n" ); document.write( "\n" ); document.write( "So, the radius = 10 yards.\r \n" ); document.write( "\n" ); document.write( "We now can use the area formula.\r \n" ); document.write( "\n" ); document.write( "A = 3.14 x (10)^2\r \n" ); document.write( "\n" ); document.write( "A = 3.14 x 100\r \n" ); document.write( "\n" ); document.write( "A = 314 yards\r \n" ); document.write( "\n" ); document.write( "We must now divide 314 yards by 3 feet per yard to convert from yards to feet.\r \n" ); document.write( "\n" ); document.write( "314 divided by 3 = 104.7 feet\r \n" ); document.write( "\n" ); document.write( "The area, in feet, is 104.7 feet\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |