Question

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?

Answer 1

doesnt sound right..

Answer 2

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

Answer 3

12?

Answer 4

your two points are (0,0) <--center
and (5,-12) <--endpoint of radius

Answer 5

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

Answer 6

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

Answer 7

13.

Answer 8

right