a car tire has a diameter of 3.5ft. How many revoulutions does each tire make if the car travelled 400ft ?
diameter is 3.5
the circumference is pi*d
so revolutions in 400 ft is 400/(3.5*pi)
36 revolutions per tire after travelling 400ft
To find the number of revolutions a car tire makes when the car travels a certain distance, we need to determine the circumference of the tire and then divide the total distance traveled by the circumference.
The circumference of a circle is calculated using the formula: C = π * d, where C is the circumference and d is the diameter of the circle.
In this case, the diameter of the tire is given as 3.5ft. So, we can calculate the circumference:
C = π * 3.5ft
Now, we need to know the value of π, which is a mathematical constant approximately equal to 3.14159. Using this value, we can substitute it into the formula:
C = 3.14159 * 3.5ft
Simplifying the equation, we have:
C ≈ 10.99557ft
This means the circumference of the car tire is approximately 10.99557 feet.
Next, we can determine the number of revolutions by dividing the total distance traveled by the circumference of the tire. In this case, the car has traveled 400ft:
Number of revolutions = Total Distance Traveled / Circumference
Number of revolutions = 400ft / 10.99557ft
Calculating this equation, we find:
Number of revolutions ≈ 36.403
Therefore, each tire would make approximately 36.403 revolutions if the car traveled 400ft.