Which is a point on the circle whose center is (0, 0) and whose radius is 5?

Answer 1

The equation of a circle whose center is 0 and who radius is 5 is x^2 + y^2 = 25. This is the Pythagorean formula for a right triangle whose hypotenuse is 5. A known right triangle is a 3-4-5 right triangle. 3 could be the x distance from the center and 4 could be the y distance from the center, resulting in the coordinate (3,4).

Answer 2

(0,5) (5,0) (-5,0) (0,-5) are the easy ones. Any 3,4 and 5 right triangle also works (3,4) (-3,4) (3,-4) and so on. Any pair that works in pathogen therom is ok