To determine the number of revolutions the tires make, we can use the formula:
The number of revolutions = Distance traveled / Circumference of the tire.
First, let's calculate the circumference of the tire using the given radius:
Circumference = 2 * π * radius
Plugging in the values, we have:
Circumference = 2 * 3.14 * 0.239
Next, let's convert the distance traveled from kilometers to meters:
Distance traveled = 70000 km * 1000 m/km
Now, we can calculate the number of revolutions:
Number of revolutions = (70000 km * 1000 m/km) / (2 * 3.14 * 0.239)
Simplifying the equation:
Number of revolutions = 70000 * 1000 / (2 * 3.14 * 0.239)
Number of revolutions ≈ 9239543
Therefore, the tires make approximately 9,239,543 revolutions during the 70,000 km travel distance, neglecting any backing up and any change in radius due to wear.