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lorasvet [3.4K]
2 years ago
8

Need help with this fast

Mathematics
2 answers:
kramer2 years ago
8 0

Answer:

<u>C</u>

Step-by-step explanation:

Formula for the volume of a cone :

<u>Volume (cone) = 1/3πr²h</u>

<u />

===========================================================

Given :

⇒ r = 4 units

⇒ h = 21 units

============================================================

Solving :

⇒ Volume (cone) = 1/3 × π × (4)² × 21

⇒ Volume (cone) = 16 × 7 × π

⇒ Volume (cone) = <u>112π units²</u>

disa [49]2 years ago
4 0

Answer:

\sf C. \quad 112 \pi \:units^2

Step-by-step explanation:

\textsf{Volume of a cone}=\sf \dfrac{1}{3} \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}

Given:

  • radius = 4 units
  • height = 21 units

Substituting the given values into the formula:

\implies \sf Volume=\dfrac{1}{3} \cdot \pi \cdot 4^2 \cdot 21

\implies \sf Volume=112 \pi \:units^2

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