Answer:
The correct answer is option B. 112π units ³
Explanation:
Formula
Volume of cone = (πr²h)/3
Where r - Radius of cone and
h - Height of cone
To find the volume of cone
Here radius r = 4 units
Height h = 21 units
Volume = (πr²h)/3
= (π * 4² * 21)/3
= 112π units ²
Therefore the correct answer is option B. 112π units ³