A hemispherical bowl made of brass has an inner diameter of (10.5 , cm). Find the cost of tin-plating it on the inside at the rate of (₹ 16) per (100 , cm²).
a) ₹ 346.5
b) ₹ 542.4
c) ₹ 271.2
d) ₹ 108.5

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