6b. How many times does a tire with a diameter of 22 in. rotate when it travels a mile?
**Tip: As there are 63,360 inches in each mile, 63,360 divided by circumference = number of full rotations. Round up to the next whole number.
*
458 rotations
1831 rotations
167 rotations
917 rotations
917 rotations
To calculate the number of rotations, first find the circumference of the tire:
Circumference = π x diameter
Circumference = π x 22 in.
Circumference ≈ 69.115 in.
Now, calculate the number of times the tire rotates in 1 mile:
1 mile = 63,360 in.
63,360 in. ÷ 69.115 in. = 917 rotations
So, a tire with a diameter of 22 in. will rotate approximately 917 times when traveling 1 mile.