What is the distance traveled by a wheel with a rim (circle) radius of 25 cm, making 100 revolutions?
| July 25, 2021 | education
The wheel, having made a revolution, travels a distance equal to the length of its rim. The length of the rim can be calculated using the formula for the circumference of a circle:
l circle = 2 * π * r ≈ 2 * 3.14 * 25 = 157 cm.
The distance that the wheel makes in 100 revolutions corresponds to:
100 * 157 = 15 700 cm.
Let’s convert centimeters to meters, for this we recall the ratio of units of length:
1 m = 100 cm.
15 700 cm = 15 700: 100 = 157 m.
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