Question

A baker uses a coffee mug with a diameter of 8cm to cut out circular cookies from a big sheet of cookie dough. What is the area A of each cookie? Give your answer in terms of pi.

Answer 1

The forumula for finding area of the circle is $\pi r^2$.

Let's find the radius of the mug:
$r=\frac{d}{2}=\frac{8}{2}=4$

Now, we can to express the area of each cookie in terms of pi:
$Area= \pi *4^2=16\pi$