SupaMav replied:

The volume of a cylinder equals the (area of the base)*height = ð r2h. Where ð (or Pi) is 3.1415927 (or 22/7), r is the radius of the circle and h is the height.

TravellingVegemite replied:

The formula is (pi)r squared times height
that is
3.1415 x radius x radius x height

That will give you the volume in cubic centimetres if you measure the radius and height in centimetres. Then you have to convert this to litres. To do this you divide by 1000.

so.....

measure the radius (from centre of circular end to side) and height (length of cylinder) in centimetres and do following:

(3.1415 x radius x radius x height) then divide by 1000

I hope this helps

Roger (maths teacher)

Member - Eskimo replied:

use inside dimentions for inside volumes and outside for total displacement providing it is sealed both ends....if maths aint your subject one can fill the object and then by using a calibrated measuring flask (or weigh scale) you can check the volume!Wow! am I cute
If yer ain't fishing, Yer ain't livin
Richard

Member - Ross replied:

1. Grab yer dog bath orf the wall
2. Grab large plastic tray (big enough to accommodate dog bath)
3. Weigh large plastic tray on bathroom scales.
4. Place dog bath in plastic tray and fill to brim with water.
4.01 While filling dog bath grab a beer ..... why not?
5. Immerse object fully in bath ... (but not your hands, arms or any other bits)
6. Remove object and get herself to lift part filled dog bath out of the way.
7. See 6 and get herself to carefully lift tray + water onto bathroom scales.
8. And now for the tricky "secret men's only business" ..... subtract weigh of
empty tray from total weight (all in kilograms of course) .. Weight in kilograms
= volume in litres e.g. 6.75 Kg = 6.75 litres

Q.E.D. and pass the Bex ... I've got a cramp in the forehead.Rosco

KG replied:

call me lazy but i prefer to put in the figures and get the answer :)

http://www.1728.com/diam.htm

or here...

http://www.csgnetwork.com/volumecalc.html

yeah i can't be bothered with linking code so you can bloody well cut n paste it :P

cheers,

KG

Outnabout David (SA) replied:

Thanks for all your replies. Should be able to work it out now.We have so little time to enjoy our land