The radius of a right circular cylinder is thrice of its height. If the height of the cylinder is 2.1 cm, then what is the volume of cylinder?
Answer & explanation
Correct answer: option 4
We know that,
Volume of a cylinder = πR2H
We have,
The radius of a right circular cylinder = thrice of its height.
Height of the cylinder = 2.1 cm.
So, according to the question,
Radius = 3 × 2.1 = 6.3 cm
The volume of the cylinder = \(\frac{22}{7}\) × 6.32 × 2.1 = 261.95 cm3