HELP PLEASE:what is the length of the diameter of a circle whose center is at point (1,2) and that passes through point (4,-2)?

Question

phi · Answer

do you know how to find the distance between 2 points?  if so, find the distance between the given points.  that is the length of the radius.  Double it to get the length of the diameter

anonymous · Answer

Oh okay. thank you. so basically when it says that the center point pass through a specific point..that means it's the radius?

anonymous · Answer

yeah i know it, ty

phi · Answer

It poorly written.  It means the center of the circle is at (1,2).  And the circle passes through another point  (4,-2)|dw:1328145087403:dw|