The diameter of a US Quarter is approximately 2.35 cm. What is the diameter of a quarter expressed in km and scientific notation ?
A) 2.35×10 - 5 km
B) 2.35×105 km
C) 2.35×10 - 2 km
D) 23.5×10 - 4 km
E) 2.35 km
Correct Answer:
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