Cylinder VolumeDate: Sun, 30 Jun 96 17:44 PDT From: Alvin Richter Subject: Volume of a cylinder Hi Dr. Math, I knew the formula for finding the volume of a cylinder when I graduated from college 45 years ago but now it eludes me. I can't seem to find it in all the places it should be. Not much of a math problem, but can you help me? I really do need to find the volume of a cylinder after all these years. Alvin Richter Date: Sun, 30 Jun 1996 21:30:22 -0400 (EDT) From: Dr. Paul Subject: Re: Volume of a cylinder I am assuming you're talking about the volume of a cylinder that resembles a soda can. That is, one where the height is perpendicular to a circular base. The volume is the area of the base times the height, or Pi * r^2 * h Pi is the mathmatical constant approximately equal to 3.141592654 r is the radius of the base h is the height of the cylinder. -Doctor Paul, The Math Forum Sun, 30 Jun 1996 21:36:36 -0400 (EDT) From: Dr. Moskowitz Subject: Re: Volume of a cylinder Hi, Alvin Richter! You probably remember that the volume of a cube is just its (length) times (width) times (height), which is the same as if you found the area of its base (length x width) and multiplied that by the height. Cylinders work similarly: find the area of the base, then multiply by the height. Since the base of a cylinder is a circle, first you find this area (pi*r*r), where r is the radius of the cylinder, then multiply that by the height. Or to be succinct: (area of a cylinder) = pi*r*r*h You might like to know about an encyclopedic resource of math equations, definitions, and background information: Eric's Treasure Trove, at http://www.astro.virginia.edu/~eww6n/math/math.html "Ask Dr. Math" says, check it out! -Doctor Moskowitz, The Math Forum |
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