Question

A cyclist goes once round a circular track of diameter 105 meter in 5 minutes. Calculate his speed.

Answer 1

Here, diameter  = 105m , radius (r) = 105 / 2

Time taken t = 5 × 60 = 300s 

Speed , V = 2πr / t = 2 × 22 / 7 × 105 / 2 × 300 = 1.10 m/s .

Hope that this ia the correcr answer