Question

Find the diameter of a circle with a circumference of 15.71 yards.

Answer 1

5 yards

Explanation:

diameter= circumference/pi

d=15.71yards/3.14159=5yards

Answer 2

`\textit{circumference of a circle}\\\\ C=\pi d ~~ \begin{cases} d=diameter\\[-0.5em] \hrulefill\\ C=15.71 \end{cases}\implies 15.71=\pi d\implies \cfrac{15.71}{\pi }=d\implies 5\approx d`