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?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 261.95 cm3.
Given:
Height = 2.1 cm and radius = 3 × Height
Formula used:
Volume of cylinder = πr2h ---- (1)
Calculations:
Radius = 3 × 2.1 = 6.3 cm
Using equation (1), we get
⇒ (22/7) × 6.3 × 6.3 × 2.1 = 261.95 cm3