For the problem below, ? is a central angle in a circle of radius r. Find the length of arc s cut off by ?.
?
?= 25°, r = 3 mm.
?
A. s = 1.31 mm
B. s = 1.11 mm
C. s = 2 mm
D. s = 5 mm
E. s = 1.21 mm
Answer: A
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