Question 111928
Remember the area of a circle is {{{A=pi*r^2}}} where r is the radius


So the area of a circle with the radius of 3.5cm is:


{{{A=pi*(3.5)^2}}} Plug in r=3.5



{{{A=pi*12.25}}} Square 3.5 to get 12.25


{{{A=38.465}}} Now multiply. Remember, {{{pi}}} is roughly 3.14...


So the area is approximately 38.465 sq cm