how can i find a circle center and raduis if i have two points on its cumference?

Question

precal · Answer

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ghazi · Answer

if you've two points at circumference use mid point formula to find center and use distance formula to find radius

precal · Answer

if you have the circle on graph paper, just count the length to find the center and its radius

anonymous · Answer

join the 2 points.draw the perpendicular bisector of the chord which cuts the circle in a diameter;its mispoint is the center

precal · Answer

all of these are great ways to do your problem, it just depends on what information you are given and how you are given it.....