Answer:

Step-by-step explanation:
we know that
The volume of a cylinder is equal to

we have
----> the radius is half the diameter
substitute the values

Answer:
6
Step-by-step explanation:
15 is 9 more hence you subtract 9 from15
Hope this helps
Step-by-step explanation:

We start with Left hand side
We know that csc(x) = 1/ sin(x)
So csc(2x) is replaced by 1/sin(2x)

Also we use identity
sin(2x) = 2 sin(x) cos(x)

4 divide by 2 is 2
Now we multiply top and bottom by sin(x) because we need tan(x) in our answer



We know that sinx/ cosx = tan(x)
Also 1/ sin(x)= csc(x)
so it becomes 2csc^2(x) tan(x) , Right hand side
Hence verified
Y=3x2+1
Hope this helped :)
The answer to the problem is B.2