Answer: V = 75.4
Step-by-step explanation: Assuming this is a cylinder we can use the formula πr^2*h. All we have to do is plug in the numbers for the equation. Since we know radius is half of the diameter we can set radius to 2. h represents height.
So since the formula is saying we need to square the radius. We multiply 2*2=4
We can then plug this in for r squared.
Making our equation= π*4*6 = 75.4