Which of the following points lies on the circle whose center is at the origin and whose radius is 5?

(-3, 4)
(1, -2)
(√5,√5)

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Equation of the circumference whose center is at and whose radius is



We are looking for the point that satisfies the equation above.

•  Testing



The point lies in the circumference.

•  Testing



The point doesn't lie in the circumference.

•  Testing



So, the point doesn't lie in the circumference either.

  (–3,  4).

I hope this helps. =)