Answer:
Option B.
Explanation:
It is given that right cylinder has a radius of 2 units and a height of 5 units. It means
r = 2
h = 5
The volume of a right cylinder is

where, r is radius and h is height of the cylinder.
Substitute r=2 and h=5 in the above formula.



On further simplification we get


The volume of right cylinder is 62.8 cubic units.
Therefore, the correct option is B.