Answer:
<u>A</u>
Explanation:
Formula for the volume of a cone :<u>Volume (cone) = 1/3πr²h</u>
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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
