A hollow metal sphere has corrected external diameter 30.40 mm and corrected internal diameter 26.80 mm. Its metal volume is closest to:
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A hollow metal sphere has corrected external diameter 30.40 mm and corrected internal diameter 26.80 mm. Its metal volume is closest to:

G1 Physics · Accepted Answer

External radius = 1.520 cm and internal radius = 1.340 cm. Metal volume = (4/3)π(R³ − r³) ≈ 4.6 cm³.