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Solution
Diameter of hemisphere = 7 cm
Volume of hemisphere = $$\frac{2}{3}\times\pi r^3$$
= $$\frac{2}{3}\times\frac{22}{7}\times(\frac{7}{2})^3$$
= $$\frac{11\times49}{6}=89.83$$ $$cm^3$$
=> Ans - (C)
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