Question

Joe has a bicycle with a front wheel that is 2 feet in diameter. how far does joe travel if his wheel turns exactly 100 complete revolutions in one directions?

314 feet

628 feet

1256 feet

6280 feet

Answer 1

Given:

The diameter of the wheel is 2 feet.

Number of revolution = 100

To find:

The total distance covered by the bicycle.

Solution:

The circumference of a circle is:

`C=2\pi r`

Where, r is the radius of the circle.

The diameter of the wheel is 2 feet. So, the radius of the circle is 1 feet.

Putting
`\pi =3.14, r=1` in the above formula, we get

`C=2(3.14)(1)`

`C=6.28`

It means the distance covered by the wheel in one revolution is 6.28 feet.

Number of revolution is 100. So, the total distance covered by the wheel in 100 revolution is:

`6.28* 100=628`

The total distance covered by the bicycle in 100 revolution is 628 feet.

Therefore, the correct option is B.