What is the approximate circumfrence of the cirlce that has a center at (2,1) and passes through the point (2,5)

If the center of a circle is (2, 1) and the circle passes through the point (2, 5), the distance from the center to the point is 4.

This is the radius.

A formula for the circumference of a circle is: C = 2·pi·r ---> C = (2)·(3.14)·(4) ---> C = 25.12