You can
put this solution on YOUR website!Volume of cylinder=
This translates into the {area of the base} times the height.
Why? Well, think of a cylinder as a [stack of congruent circles]. The [amount of circles] is the height. Take the area of one circle, and times it by the [amount of circles] or the height of the [stack of congruent circles]. That gives you the volume of the whole [stack of congruent circles].
Anyway, so take
and plug in your values. The diameter is 4, so r=2. The altitude, or height, is 4.
Plug all that stuff in and get
. Simplify that and get
. Then multiply 4 by 4 and get
. Otherwise known as
.
So your volume would be
(