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Find the volume of a cone of radius 3.5cm and vertical height 12cm. [Take π =...

Mathematics
WAEC 2022

Find the volume of a cone of radius 3.5cm and vertical height 12cm. [Take π = 22/7]

  • A. 15.5cm\(^3\)
  • B. 21.0cm\(^3\)
  • C. 142cm\(^3\)
  • D. 154cm\(^3\)
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Correct Answer: Option D
Explanation

volume of a cone = ⅓ π r2h → \(\frac{1*22*3.5*3.5*12}{3*7}\)

= 154cm\(^3\)

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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