sat suite question viewer
Points , , and lie on the circle shown. On this circle, minor arc has a length of centimeters and major arc has a length of centimeters. What is the circumference, in centimeters, of the circle shown?
Explanation
Choice D is correct. Since the endpoints of minor arc and major arc are the same, and the arcs together form a full circle, the sum of the lengths of these two arcs is equal to the circumference of the circle. It's given that the length of minor arc is centimeters and the length of major arc is centimeters. Therefore, the circumference of the circle, in centimeters, is , or .
Choice A is incorrect. This is the length, in centimeters, of minor arc , not the circumference, in centimeters, of the circle.
Choice B is incorrect. This is the difference of the lengths of major arc and minor arc , in centimeters.
Choice C is incorrect. This is the length, in centimeters, of major arc , not the circumference, in centimeters, of the circle.