Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

In the figure above, inscribed triangle A B C is equilateral. If the radius of the circle is r, then the length of arc A X B is

(A) (2 times pi times r) over 3

(B) (4 times pi times r) over 3

(C) (3 times pi times r) over 2

(D) (pi times r^2) over 3

(E) (2 times pi times r^2) over 3?

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