Approximate the circumference of the circle using 3.14 for ?.
A. 84.78 cm
B. 82.08 cm
C. 42.39 cm
D. 41.04 cm
Answer: C
Mathematics
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Find the area of the shaded region.
A. 2 B. 2 + 2? C. ? D. 2?
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Find the absolute value of the complex number.z = -4
A. -16 B. -4 C. 16 D. 4
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Express the radical in simplified form. Assume that all variables represent positive real numbers.- 
A. -3xy
B. 3xy
C. xy
D. -3xy
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