Question 77697
Find the area of a circle with circumference 10(pi). 
Circumference=2pir 
{{{highlight(C=2*pi*r)}}}
{{{10*pi=2*pi*r}}}
{{{10*pi/(2*pi)=2*pi*r/(2*pi)}}}
{{{5=r}}}
The Area of a circle is= pi*r^2 
{{{highlight(A=pi*r^2)}}}
{{{A=pi*5^2}}}
{{{highlight(A=25*pi)}}}
Happy Calculating!!!