What is the volume of a right-circular cylinder in cm3 having radius 2cm and height 7cm?

Q. What is the volume of a right-circular cylinder in cm³ having radius 2cm and height 7cm?
(A) 86 cm³
(B) 88 cm³
(C) 90 cm³
(D) 92 cm³

The answer is: (B) 88 cm³
Solution
Here, r=2 and h=7. Hence, by using formula for finding volume of a right-circular cylinder, we have