Final answer:
To find the number of rotations that each tire makes in covering a certain distance, you can divide the distance by the circumference of the tire. The circumference can be calculated using the formula: circumference = 2 * π * radius.
Step-by-step explanation:
To calculate the number of rotations each tire makes in covering a distance, we need to find the circumference of the tire and divide the total distance by that circumference. The circumference of a tire can be calculated using the formula: circumference = 2 * π * radius. Given the diameter of the tire (42 cm), we can find the radius by dividing the diameter by 2. Using this radius, we can find the circumference and then calculate the number of rotations by dividing the distance by the circumference.
First, let's find the radius of the tire: radius = diameter / 2 = 42 cm / 2 = 21 cm.
Now, let's calculate the circumference of the tire: circumference = 2 * π * radius = 2 * 3.14 * 21 cm.
Finally, we can calculate the number of rotations by dividing the total distance by the circumference: rotations = distance/circumference = 132 km * 1000 m/km / (circumference * 100 cm/m).