document.write( "Question 616579: Please help me solve this problem:
\n" );
document.write( "A rope 18 feet long is cut into two pieces. One piece is used to form a circle and the other used to form a square. Find a function representing the area of both square and circle as a function of the length of one side of the square.\r
\n" );
document.write( "\n" );
document.write( "I can get to A(s)= pi(9-2s/pi)^2+s^2 but I am lost after that. \n" );
document.write( "
Algebra.Com's Answer #387775 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! c+s=18 \n" ); document.write( "c= circumference of circle \n" ); document.write( "s= perimeter of square\r \n" ); document.write( "\n" ); document.write( "c=18-s \n" ); document.write( "Area of square=(s/4)^2 \n" ); document.write( "2*pi*r=c \n" ); document.write( "r=c/(2*pi) \n" ); document.write( "Area of circle=pi*r^2= \n" ); document.write( "Area of circle=pi*(c/(2*pi))^2 \n" ); document.write( "Area of circle=pi*((18-s)/(2*pi))^2 \n" ); document.write( "Area of circle=(18-s)^2/(4 pi) \n" ); document.write( " \n" ); document.write( " |