The radius of a right circular cylinder is thrice of its height. If the height of the cylinder is 3.5 cm., then what is the volume of cylinder?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 1212.75 cm3
Given that
The radius of a circular cylinder = 3 × height of cylinder
the height of the cylinder (h) = 3.5 cm
so, the radius of cylinder (r) = 3 × 3.5 = 10.5 cm
Formula used
Volume of a cylinder = πr2h cubic units
Calculation
Volume of a cylinder = (22/7) × 10.5 × 10.5 × 3.5 = 1212.75 cm3