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The radius of the base of a cone is 7 cm and its slant height is 25 cm. What is its curved surface area?

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The radius of the base of a cone is 7 cm and its slant height is 25 cm. What is its curved surface area?

  • A154 cm²
  • B550 cm²
  • C462 cm²
  • D1100 cm²
Correct answer: B

Explanation

Curved surface area = πrl = (22/7) × 7 × 25 = 550 cm².

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