Question

A circle has a diameter of 12 units what is the circumference?use 3.14 as an approximation for pi

Answer 1

The circumference is equal to 37.68 units

Explanation:

The circumference of a circle has the following formula

`c=2\cdot\pi\cdot r`

We know that the radius is equal to half the diameter, therefore, we replace and we have:

`\begin{gathered} r=(d)/(2)=(12)/(2)=6 \\ \text{replacing:} \\ c=2\cdot3.14\cdot6 \\ c=37.68 \end{gathered}`