Question 616579
c+s=18
c= circumference of circle
s= perimeter of square

c=18-s
Area of square=(s/4)^2
2*pi*r=c
r=c/(2*pi)
Area of circle=pi*r^2=
Area of circle=pi*(c/(2*pi))^2
Area of circle=pi*((18-s)/(2*pi))^2
Area of circle=(18-s)^2/(4 pi)