Question 1134193

The ratio of the area to the circumference of a circle is {{{5/4}}}. 

the area is {{{r^2*pi}}}
 the circumference {{{2r*pi}}}

=> {{{(r^2*pi)/(2r*pi)=5/4}}}

 {{{(r^cross(2)*cross(pi))/(2*cross(r)*cross(pi))=5/4}}}

{{{r/2=5/4}}}

{{{r=2(5/4)}}}

{{{r=cross(2)(5/cross(4)2)}}}

{{{r=5/2}}}


=> the circumference {{{2r*pi=2(5/2)pi=5pi}}}