Question

What is the radius of a circle with a circumference of 196pi m?

Answer 1

$\text{circumference of a circle=2}\pi r$$\begin{gathered} 196\pi=2\pi r \\ \text{divide both sides by 2}\pi \\ \frac{196\pi}{2\pi}=\frac{2\pi r}{2\pi} \\ r=98\text{ m} \end{gathered}$