Question

A bicycle tire has a diameter of 70 centimeters (cm). What is the circumference of the tire? Use 3.14 for pi. Round your answer to the nearest centimeter.

Answer 1

220 centimeters

Explanation:

To find the circumference of a circle, use the formula
`C=2\pi r`, where C is the circumference and r is the radius. Substitute our values in. Remember that the radius is half of the diameter, so it is 35.

`C=2\pi r`

Plug in the radius of our tire.

`C=2\pi (35)`

Simplify.

`C=6.28(35)`

`C=219.8`

The circumference is 219.80 cm. Round this up to 220 cm.

Good luck ^^

Answer 2

220

Explanation:

70*3.25=219.8