Answer:
2
Step-by-step explanation:
2x2x2x2 is 8
Step-by-step explanation:
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pi radians in a semicircle (half circle)
2pi radians in a full circle.
2pi = 2*3.14 = 6.28 approximately, so there are approximately 6.28 radians in a half circle.
2pi radians is equivalent to 360 degrees.
