what is the area of a circle with a radius of 8 centimeters

what is the area of a circle with a radius of 8 centimeters

$\begin{array}{|rcll|} \hline A &=& \pi r^2 \quad & | \quad r = 8\ cm \\ &=& \pi 8^2 \ cm^2 \\ &=& 64 \pi \ cm^2 \quad & | \quad \pi = 3.14159265359\ldots \\ &=& 201.061929830 \ cm^2 \\ \hline \end{array}$

8*8 = 64 * 3.14