Asked by casey

the point (6,-1) is on a circle whose center is (12,7). whats the length of the radius of the circle?
Answered by Ariana
The radius is 12 because 6 and 12 are 6 apart and 1 and 7 are 6 away. 6+6=12
Answered by Reiny
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
Answered by Ariana
Sorry, I'm not the best at math whatsoever, I've already posted like 5 math questions.
Answered by Ms. Sue
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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