Chris used 45 meters of fencing to enclose a circular garden. what is the approximate radius of the garden, rounded to the nearest tenth of a meter? use 3.14 for π

The length of the fencing corresponds to the length of the perimeter of the garden:

We also know that the perimeter of a circle is given by:

where r is the radius of the circle.

Putting together the two equations, we have

from which we can find r, the radius of the garden: