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A chocolate cookie is a circular disk of diameter 8.50 ± 0.02 cm and thickness 0.050 ± 0.005 cm. The average volume in cm is 

A. 2.83 ± 0.3

B. 2.38 ± 0.27

C. 11.35 ± 1.2

D. 9.31 ± 1.12

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