What is the area of a circle with diameter 30 cm?

Jun 6, 2018

The area of the circle is $\text{706.9 cm"^2}$.

Explanation:

The formula for the area of a circle is:

"Area"=pi*("radius")^2,

$\text{radius"=1/2*"diameter}$

$\text{radius"=1/2*"30 cm"="15 cm}$

$A = \pi \cdot {\left(\text{15 cm}\right)}^{2}$

$A = \text{706.9 cm"^2}$

I used the $\pi$ key on my calculator. If you don't have one, use $3.14159$.