A Child's Circular Adventure: Calculating Distance and Displacement

[nerdygirl4]

Homework Statement

A child rides on a pony around a circular track with a radius of 4.5 meters.

Homework Equations

What is her distance traveled and displacement after she has gone half way around the track?

The Attempt at a Solution

 

[Simon Bridge]

Welcome to PF;
The way we work is that you attempt the problem as far as you can, showing how you are thinking about it, and we help you where you get stuck.

In this case - think about the geometry, and the definition of "displacement".
What shape is the track?

 

[CWatters]

Perhaps start by considering what the distance traveled and displacement would be had the child gone the whole way round the track.