The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a?
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Correct Answer: Option A
Explanation:
f = \(\frac{m}{4}\) = f = \(\frac{d}{4}\)
f = \(\frac{20}{4}\) = 5cm
f = \(\frac{m}{4}\) = f = \(\frac{d}{4}\)
f = \(\frac{20}{4}\) = 5cm