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A hollow metal pipe is 21 cm long. Its outer diameter is 10 cm and its inner diameter is 6 cm. Find the volume of metal in the pipe, in . Take π = 22/7.

Competition practiceAreas & Volumes
  • A4224
  • B528
  • C2112
  • D1056

Step-by-Step Solution

Outer radius cm and inner radius cm. Volume of metal = π.
Answer: D) 1056

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