Question

The center of a circle is at the origin. An endpoint of a diameter of the circle is at (-3, -4). How long is the diameter of the circle?
5
10
25

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
12
13

Answer 1

10
13

Answer 2

Anything else ?

Answer 3

10,13. Pythagorean theorem on both, or both are also famous Pythagorean triples; (3,4,5) and (5,12,13)

Answer 4

yes they are