18pankhichhabra 18pankhichhabra
  • 17-06-2020
  • Mathematics
contestada

The diameter of a bicycle wheel is 50 cm. How many complete rotations does it make over a distance of 3km?

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Brainy829
Brainy829 Brainy829
  • 17-06-2020

Answer:

47.12388

Step-by-step explanation:

Wheel Diameter = Wheel 2 x Radius; 50 cm / 2 = 25 cm.

For one rotation of the wheel, the distance travelled = circumference of the wheel.

Circumference = 2 x pi x radius = 2 x 3.1415926858 x 25 cm = 157.07 cm approx.

Distance travelled with 30 turns of the wheel = 30 x 157.07 = 4712.39cm approx.

Distance in meters = 4712.39cm / 100 = 47.12388 meters approximate (1 cm = 1/100th of a meter).

hope it helps you

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