Problema Solution
A circle in the xyxyx, y-plane has its center at the point (-6,1)(−6,1)left parenthesis, minus, 6, comma, 1, right parenthesis. If the point (7,12)(7,12)left parenthesis, 7, comma, 12, right parenthesis lies on the circle, what is the radius of the circle? Round the answer to the nearest tenth.
Answer provided by our tutors
The radius of the circle R equals the distance between the two points: (-6, 1) and (7, 12):
R^2 = (7 - (-6))^2 + (12 - 1)^2
R^2 = 13^2 + 11^2
R^2 = 290
R = 17.03