## anonymous 4 years ago 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?

1. anonymous

doesnt sound right..

2. anonymous

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

3. anonymous

12?

4. anonymous

5. anonymous

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

6. anonymous

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

7. anonymous

13.

8. anonymous

right