SAT Math Multiple Choice Practice Question 383: Answer and Explanation

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Question: 383


If the radius of the circle with center O above is 4, what is the length of arc RST?

A. 2π
B. 4π
C. 8π
D. 12π
E. 16π

Correct Answer: A


A Since the angle shown is a right angle, the arc represents ? of the circumference.

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