A bicycle trail has the shape of a circle has a diameter of 2 miles Michelle bike around the trail how far did Michelle bike

6.28 miles

Step-by-step explanation:

How far Michelle bike around the bicycle trail is the circumference or perimeter of bicycle trail.

This is given by:

where d=2 miles is the diameter of the bicycle trail.

We substitute to get:

Therefore she travelled approximately 6.28 miles

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.