How do you find the circumference and area of a circle with radius of 3 feet?

Oct 3, 2015

$C = 6 \pi \textcolor{w h i t e}{0} f t$
$A = 9 \pi \textcolor{w h i t e}{0} f {t}^{2}$

Explanation:

Remember the formulas

$C = 2 \cdot \pi \cdot r$
$A = \pi \cdot {r}^{2}$

So

$C = 2 \cdot \pi \cdot 3 = 6 \pi \textcolor{w h i t e}{0} f t$
$A = \pi \cdot {\left(3\right)}^{2} = 9 \pi \textcolor{w h i t e}{0} f {t}^{2}$