Question

How many turns does a wheel need with radius of 14 inches to across a 1 mile track?

Answer 1

circumference of wheel = \[2 \pi r\]
r = 14 inches
So the number of turns to cover one mile (63360 inches) will be
\[\left( 63360 \right) \div \left( 2 \pi \times 14 \right)\]
= 360 (approx)

Answer 2

2640

Answer 3

Sorry there has been a calculation mistake, the answer comes out to be 720.28 but still it isnt 2640.