Question

How much room is there to spread frosting on the cookie? Clare says the radius of the cookie is about 3 cm so the space for frosting is about 6n cm Andre says the diameter of the cookie is about 3 inches so the space for frosting is about 2.25in is this question talking about area or circumference?

Answer 1

This question is talking about area.

$$Area=\pi r^2={\pi d^2 \over 4}$$

If the radius of the cookie is about 3 cm, the space for frosting is about $9\pi$ cm². If the diameter of the cookie is about 3 inches the space for frosting is about $2.25\pi$ in².