Question

Circumference of a circleThe radius of a circle measures 16 m. What is the circumference of the circle?Use 3.14 for, and do not round your answer. Be sure to include the correct unit in your answer.

Answer 1

Given:

`\text{radius of a circle, r = 16m}`

The circumference (C) of a circle is given by;

`\begin{gathered} C=2\pi r \\ \text{where;} \\ C\text{ is the circumference of the circle} \\ r\text{ is the radius} \end{gathered}`

Hence,

`\begin{gathered} r=16m \\ \pi=3.14 \\ C=\text{?} \end{gathered}`

Thus,

`\begin{gathered} C=2\pi r \\ C=2*3.14*16 \\ C=100.48m \end{gathered}`

Therefore, the circumference of the circle is 100.48m