Questions on Geometry: Bodies in space, right solid, cylinder, sphere answered by real tutors!

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Question 148488: The diameter of the base of a cylinder measures 4, and the altitude measures 4. In cubic units what is the volume of the cylinder : The diameter of the base of a cylinder measures 4, and the altitude measures 4. In cubic units what is the volume of the cylinder
Answer by mangopeeler07(442) About Me  (Show Source):
You can put this solution on YOUR website!
Volume of cylinder=pi(r^2)h
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 pi(r^2)h 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 pi(2^2)4. Simplify that and get pi(4)4. Then multiply 4 by 4 and get pi(16). Otherwise known as 16pi.

So your volume would be 16picm^3