Question

If a wheel has a radius of 5cm

how much is one rotation of the wheel
How many rotations can the wheel do within a distance of 50km

Answer 1

circumference = 2*PI*radius

circumference = 2 * PI * 5 cm

circumference = 31.4159265358979 cm

50 km = 500,000 centimeters

rotations = 500,000 / 31.4159 cm

15,915.51 rotations

Explanation: