OT: calculating volume

[in2minds]

water tank measures 1500mm * 400mm * 400mm

does that equate to 240 cubic litres (53 ish cubic gallons) ?

thanks Les

[Alex]

1 litre = very nearly 1000cm^3, so yes it is equal to 240 litres.

Alex

[Richard Sterry]

Yup, agreed. One minor point - you can drop the term "cubic" - litres and gallons are units of volume.

Rick

[P.R.Brady]

Les,

Litres and gallons are volume measures so leave out the 'cubic' bit and you'll be right.

A litre is 1000 cubic centimetres or a 10cm X 10cm X 10cm cube, so your tank is 240,000 cubic centimetres or 240 litres.

An English gallon is about 4.54 litres so your tank is about 53 gallons. It would be more in US gallons which are smaller.

Just to check - that 1500mm is right? A long thin tank?

Phil

[Richard Packer]

Er... 1 litre = very exactly 1000 cm^3

[Alex]

In my line of work there is a lot of difference between 1000 and 1000.083, must remember to learn that this precision isn't really needed when sizing water tanks :)

Thinking about it, that figure was actually from an old reference from a particular experiment, I wonder if perhaps atmospheric pressure was substansially different in it. Being a smart-ass has no doubt back-fired on me!

Alex

[T i m]

It is if you want them to fit within a certian space? ;-)

All the best ..

T i m

[Dave Baker]

Maybe you're thinking about density of water which isn't exactly 1.0g/cm^3. A litre IS exactly 1000 cm^3 though - that's its definition.

Dave Baker - Puma Race Engines

I'm not at all sure why women like men. We're argumentative, childish, unsociable and extremely unappealing naked. I'm quite grateful they do though.

[Alex]

Dear all,

Apologies for my idiocy. However, just to show that I can definitively pass the blame on to my old reference material, read this link:

bit like the length of a metre changing I suppose!

Alex

[Dave Baker]

Here is an excellent site about the history of measurement showing how things have changed over the last couple of centuries and with all the current definitions.

Baker - Puma Race Engines I'm not at all sure why women like men. We're argumentative, childish, unsociable and extremely unappealing naked. I'm quite grateful they do though.

[in2minds]

yes 1500mm, it's to fit under a bench seat in the back of a van

Les

[Richard Packer]

I blame the French, even though 1964 was a particularly fine year ;-)

[asdfasdf]

240 litres is a bit long winded. It's roughly one standard wheelie bin (1 WB) which is a much more convenient unit of measurement. We could redefine the litre as 1/240 WB Beer would of course be ordered in 1/422 WB, or 2.36 miliWB

[geoff]

In message , asdfasdf writes

Yeah, I'll watch you doing a "down in one" when you're pissed and miscalculate

[The Natural Philosopher]

Mmm. No way. A liter is DEFINeD s 1000 cm3

HOWEVER unless the water is totally pure and all other things equal, a liter of water may not weigh a kilogram...

[blah]

There's no such thing as a cubic litre and I'm pretty sure there's no such thing as a cubic gallon either!