Step-by-step explanation:
We have, a sphere and a cylinder have the same radius and height. The volume of the cylinder, 
The volume of sphere is : 
The volume of cylinder is : 
Dividing the volume of sphere and the volume and cylinder, such that,

As r = h

So, the volume of sphere is (four-third) of 11. therefore, the correct option is (A).
Answer:
B) 4
Step-by-step explanation:
(f-g)(x) = x² - 4x - 1
5² - 4(5) - 1 = 4