If we consider x having any other value then 0,1 or 2 then the answer is b.2x(x-1)
Answer:
1. D
2. D
3. H
4. B
5. B
Step-by-step explanation:
The answer is 6 as unit digit of number is 4 when you square you will get the unit digit 6
Answer:
The volume of the ball with the drilled hole is:

Step-by-step explanation:
See attached a sketch of the region that is revolved about the y-axis to produce the upper half of the ball. Notice the function y is the equation of a circle centered at the origin with radius 15:

Then we set the integral for the volume by using shell method:

That can be solved by substitution:

The limits of integration also change:
For x=5: 
For x=15: 
So the integral becomes:

If we flip the limits we also get rid of the minus in front, and writing the root as an exponent we get:

Then applying the basic rule we get:

Since that is just half of the solid, we multiply by 2 to get the complete volume:

