Answer:
24,968 revolutions
Explanation:
We need to find the circumference of the wheel in order to determine how many revolutions it will take to cover a distance of 78.5 km. The formula for circumference is:
Circumference = π x diameter
Substituting the given values, we get:
Circumference = 3.14 x 1 = 3.14 meters
Now, we need to convert the distance of 78.5 km to meters, so that we can compare it with the circumference of the wheel.
1 km = 1000 meters
Therefore, 78.5 km = 78,500 meters
To find the number of revolutions taken by the wheel, we need to divide the distance traveled by the circumference of the wheel:
Number of revolutions = Distance ÷ Circumference
Number of revolutions = 78,500 ÷ 3.14
Number of revolutions = 24,968.15
Therefore, it will take approximately 24,968 revolutions for the wheel of the truck to cover a distance of 78.5 km.
Hopes this helps