Question

Randy can run $\pi$ meters every 2 seconds. If the circular track has a radius of 75 meters, how many minutes does it take Randy to run twice around the track?

Answer 1

Speed of $Randy=\frac{\pi }{2}m/s$

Circumference of Circular Track $=2\pi r=2\pi \times 75m=150\pi$ $m$

Distance covered on Running Twice the Track $=2\times 150\pi m=300\pi$ $m$

Time of Running Twice the Track$=\frac{300\pi }{\frac{\pi }{2}}=600s=10$ $minutes$