The formula for the volume of a cylinder is V=pi*r^2*h Since the diameter is 6.8, the radius must be 3.4 (6.8/2) We can then plug in the given values to solve for the volume V=3.14*3.4^2*4 V=3.14*11.56*4 V=145.2 so B
Is this a true/false or do you need an actual mathematical answer? i will edit my this to answer your question. I'm just not exactly sure what you are asking :-/