helpme9283 Group Title A circle has its center at the origin, and (5, -12) is a point on the circle. How long is the radius of the circle? 5? 2 years ago 2 years ago

1. lgbasallote Group Title

doesnt sound right..

2. lgbasallote Group Title

use the distance formula $\huge \sqrt{(x_2-x_1)^2 + (y_2 - y_1)^2}$

3. helpme9283 Group Title

12?

4. lgbasallote Group Title

5. katiebugg Group Title

wouldnt u just messure the distance from the orgin to the point on the circle

6. lgbasallote Group Title

@helpme9283 try solving...then guess :p haha

7. helpme9283 Group Title

13.

8. lgbasallote Group Title

right