# A circle with center (0, 0) passes through the point (5, 12). How do you find the radius of the circle?

##### 1 Answer

The radius is simply the distance from the center to the edge, and we can use Pythagoras' Theorem to calculate that for this circle the radius is

#### Explanation:

The radius is simply the distance from the center to the edge. We know the center is at

We can do this because

Taking the square root of both sides,