## How to calculate the a volume of a cylinder

#### Saturday, September 12th, 2009 | Tips

Are your students battling to remember the formula of a cylinder? Try to illustrate it by means of a pizza (I must admit it is a rather flat cylinder!).

If the height of the pizza is **a**, and the radius is **z**, the formula to calculate its volume is:

### 8 Comments to *How to calculate the a volume of a cylinder*

Is it to 2pizza?

**Marius Pretorius**

Saturday, 12 September, 2009

Very clever! I like it. Much more user friendly than saying volume of a cylinder is the area of a circle (which is pi x radius x radius) x height of cylinder.

**Kathy McCabe**

Saturday, 12 September, 2009

As a non-mathematician may I ask, does it make a difference if you take off the pepperami and add asparagus instead??

All this pi stuff sounds completely IRRATIONAL and abSURD to me… or as my husband would say, TRANSCENDENTAL…

**Denissa**

Saturday, 12 September, 2009

Great!! It is one of those tools that U wish to have for ur class… thanks for sharing!

**Mark C**

Saturday, 12 September, 2009

Aaargh! What’s that 2 doing there?

**kvanwyk**

Sunday, 13 September, 2009

Kathy, if you use asparagus it should not make any difference to the formula at all … provided the height is not altered. However, it may make a difference to the waistline!

**Kathy McCabe**

Sunday, 13 September, 2009

Ha ha… that’s funny! You obviously didn’t get the bit about pi being a transcendental number – that’s an irrational number that can’t be written as a surd…

**Susie**

Wednesday, 19 January, 2011

Here is another spot that explains it pretty good, even has some calculators you can use too.

http://www.volumeformula.org

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Mark CSaturday, 12 September, 2009