Tan (angle b) using an exact expression in trigonometric ratios in right triangles

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

What is the upper quartile in the box plot?