geometry

What is the equation of the circle with center (2, –5) that passes through the point (–2, 10)?

can someone explain this to me please

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  1. (x-2)^2 + (y+5)^2 = r^2

    16 + 225 = r^2
    r^2 = 241

    (x-2)^2 + (y+5)^2 = 241

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