The wheel of a car has an outer radius of 25 cm. Calculate: a) How far the car has travelled after one complete turn of the wheel b) How many times the wheel turns for a journey of 1 km help plz idk how to solve this thx
Circumference of a circle (the wheel) is
pi * d = pi * (25 *2) = 50 pi = 157 cm = 1.57 m = .00157 km for ONE turn.
b) 1 km / .00157 km/turn = 636.62 turns
