What does the variable, r, represent

The variable r represents the distance the point moves as the circle rotates.

Is this true or false?

Claudia, it's time you learned the truth about variables...there are no standard variables. They all must be defined in the context of the problems being worked on.

Thus, that r...it depends on the context of the problem. If you read the problem very carefully, there should be somewhere in the text that defines what r stands for. If there isn't then that is a poorly phrased question. And whoever constructed that question should be ashamed at being so sloppy.

And that's the truth.

umm well I know r is the radius of a circle which is half the width of a
circle

It can, yes. Depends on the context, but most times, yes it does mean the radius...

pirates