Question

A wheel has a radius of 12 cm. Approximately how far does it travel in 2 revolutions?

47.1 cm

150.72 cm

188.4 cm

376.8 cm

Answer 1

150.72 cm is your answer 

Answer 2

Option B is correct

150.72 cm far does it travel in 2 revolutions

Explanation:

Using the formula:

`D = n ( 2\pi r)`

where

D is the distance

n is the number of revolution

r is the radius of the circle.

As per the statement:

A wheel has a radius of 12 cm.

⇒
`r =12`cm

We have to find the distance does it travel in 2 revolutions.

Substitute the value of n = 2 , r =12 cm and
`\pi = 3.14` we have;

`D = n ( 2\pi r)`

`D = 2 \cdot (2 \cdot 3.14 \cdot 12)`

Simplify:

`D = 150.72` cm

Therefore, 150.72 cm far does it travel in 2 revolutions