Density: A round coin has a diameter of 19.55 mm, a thickness of 1.55 mm, and a mass of 2.50 g. What is its density?
A. 5.37 × 103 kg/m3
B. 21.5 × 103 kg/m3
C. 1.34 × 103 kg/m3
D. 2.68 × 103 kg/m3
E. 1.86 × 10-4 kg/m3
Answer: A
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