math

the point (6,-1) is on a circle whose center is (12,7). whats the length of the radius of the circle?

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  1. The radius is 12 because 6 and 12 are 6 apart and 1 and 7 are 6 away. 6+6=12

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  2. No, Ariana, that is incorrect.

    You have to find the distance formula to find the distance between the centre and the given point.

    Dist. = √[(12-6)^2 + (7+1)^2]
    = √(36+64)
    = √100
    = 10

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  3. Sorry, I'm not the best at math whatsoever, I've already posted like 5 math questions.

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  4. Ariana -- when you post an answer that you're not sure about, you're confusing another student. Please only post answers that you know for certain are correct.

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    Ms. Sue

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