A circle in the xy-plane has its center at the point (−6,1). If the point (7,12) lies on the circle, what is the radius of the circle?(Round the answer to the nearest integer.)
Q. A circle in the xy-plane has its center at the point (−6,1). If the point (7,12) lies on the circle, what is the radius of the circle?(Round the answer to the nearest integer.)
Identify Center and Point: Identify the coordinates of the center of the circle and a point on the circle.The center of the circle is at (−6,1), and the point on the circle is (7,12).
Calculate Radius: Use the distance formula to calculate the radius of the circle.The distance formula is d=(x2−x1)2+(y2−y1)2, where (x1,y1) and (x2,y2) are the coordinates of two points.
Plug Coordinates into Formula: Plug the coordinates of the center and the point on the circle into the distance formula.Using the center (−6,1) and the point (7,12), we get:r=(7−(−6))2+(12−1)2r=(7+6)2+(12−1)2r=132+112r=169+121r=290
Round to Nearest Integer: Round the result to the nearest integer.Since 290 is approximately 17.03, we round it to the nearest integer, which is 17.
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