General Question

itsjustcruel's avatar

Help with this maths question?

Asked by itsjustcruel (387points) November 29th, 2011

I don’t want the answer, I would just like to know how I go about working this out as I have forgotten:
Billy likes to go cycling, his bike wheels have a diameter of 90cm.
Billy counts the number of revelations the wheel makes. It makes 140 revolutions, how far has Billy cycled? Give your answer to the nearest metre.

Observing members: 0 Composing members: 0

5 Answers

Mariah's avatar

In one rotation, he travels a distance equal to the circumference of his wheel. Do you know how to calculate circumference given the information you have?

itsjustcruel's avatar

@Mariah Yes thanks, I kept forgetting that part :)

Mariah's avatar

Okay, cool! It helps if you picture the wheels having paint on them and leaving a line behind him. You can picture better the relationship between circumference and distance traveled that way.

machi's avatar

Billy likes to go cycling, his bike wheels have a diameter of 90cm.
Billy counts the number of revelations the wheel makes. It makes 140 revolutions, how far has Billy cycled? Give your answer to the nearest metre

Answer this question

Login

or

Join

to answer.

This question is in the General Section. Responses must be helpful and on-topic.

Your answer will be saved while you login or join.

Have a question? Ask Fluther!

What do you know more about?
or
Knowledge Networking @ Fluther