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A factory makes 50 closed tins, each of radius 3.5 cm and height 10 cm. How much tin sheet is used (no waste)? (Take π = )

Class 8Surface Area of a CylinderMensuration
  • A1485 sq cm
  • B14850 sq cm
  • C11000 sq cm
  • D12925 sq cm

Step-by-Step Solution

One tin: TSA sq cm. For 50 tins: 14850 sq cm. 11000 counts only the sides; 12925 counts one lid each.
Answer: B) 14850 sq cm

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