The answer is 20 because you plug in x=2 into f(x)

Hey there,
The equation for the volume of a cylinder is V = πr²h.
The first step into finding the radius is to plug in what you already know into the equation:
We divide both sides by 5:
Now we divide both sides by π:
Finally we just do the square root of 49.0197224723:
The radius therefore would be about 7cm.
Hope I helped,
Amna
This is the graph of 1/x moved 4 units to the left
so its f(x) = 1 / (x + 4)
C