Pre-calculus-check answer please

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Write the standard form of the equation of the circle that is tangent to the line x=3 and has center at (-2,-7).

Answer: (x+2)^2+(y+7)^2=49

Is this correct?

  • Pre-calculus-check answer please -

    did you make a quick sketch?
    should it not be obvious from your sketch, that the radius would be 5 ?

    so the equation should have been:
    (x+2)^2 + (y+7)^2 = 25

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