Question

a circular go-kart track has a diameter of 75 meters. approximately how long is the track?

Answer 1

how long is the track or namely, what's its perimeter.

$\textit{circumference of a circle}\\\\ C=\pi d~~ \begin{cases} d=diameter\\[-0.5em] \hrulefill\\ d= 75 \end{cases}\implies C=\pi 75\implies C \approx 235.62$