Question

If your cookie has 2 eyes and 3 buttons that have a radius of 0.75 cm. What would the circumference of 1 button be?

Answer 1

Each button has a radius of r=0.75cm

To calculate the circumference of a circle you have to multiply the value pi by the diameter.

Since the diameter is twice the radius, we can express the calculation as

`C=\pi2r`

For the button the circumference is

`\begin{gathered} C=\pi2\cdot0.75 \\ C=(3)/(2)\pi \\ C\cong4.71 \end{gathered}`