document.write( "Question 1014249: A circular rug has an interior circle and two rings around the circle. Write a polynomial that represents the total area of the rug if the radius of the interior rug is r and each ring is 1 ft. from edge to edge.
\n" );
document.write( "I've done some work, and I know that the radius of a circle is pi r squared. \n" );
document.write( "
Algebra.Com's Answer #630549 by Theo(13342)![]() ![]() You can put this solution on YOUR website! you are correct.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the area of a circle is equal to pi * r^2.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the key is finding the radius of the whole rug, including the outer rings.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the radius of the interior rug is pi * r^2.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "r represents the radius of the interior rug.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "each of the rings around the interior rug is 1 foot wide.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i believe that's what they mean by 1 foot edge to edge.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your total radius of the whole rug, including the rings around the interior, would be r + 2.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the area of your rug, including the rugs around it, would therefore be equal to pi * (r+2)^2.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your equation, as best i can interpret it is, a = pi * (r+2)^2.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a is the area of the rug, including the outer rings. \n" ); document.write( "r + 2 is the radius of the rug, including the outer rings.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |