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Sagot :

Answer:

A

Explanation:

Formula for the volume of a cone :Volume (cone) = 1/3πr²h

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Given :

⇒ r = 4 units

⇒ h = 21 units

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Solving :

⇒ Volume (cone) = 1/3 × π x 4² × 21

⇒ Volume (cone) = 16 × 7 × π

⇒ Volume (cone) = 112π units²