# a 40m and 20m pool vs a 40m×20m pool

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#### marsbeing

##### Senior Member
What is the correct way to say a pool that is 40m long and 20m wide, a 40m and 20m pool or a 40m×20m pool? Or rather, both forms are acceptable?

• #### DonnyB

##### Sixties Mod
The usual way to do that is "a 40m×20m pool".

If I saw "a 40m and 20m pool" it would suggest to me two pools, one 40m and the other one 20m.

#### natkretep

##### Moderato con anima (English Only)
If you want to write it to reflect how it is said, '40m by 20m' is possible, but the form given by Donny is the most common.

#### marsbeing

##### Senior Member
Thanks Donny.

So a 40m and 20m pool means something quite different. It means two pools, one 40m long on each side, and the other 20m long on each side. Am I correct?

#### marsbeing

##### Senior Member
I see. Thanks natkretep.

#### Andygc

##### Senior Member
It's 40 m by 20 m or 40 m x 20 m. "And" makes no sense except in "... a pool that is 40 m long and 20 m wide ..."

Note the space between the number and the abbreviated unit. That is the correct style of the International System of Units.

#### marsbeing

##### Senior Member
Thanks for pointing that out, Andy. I will take note. : )

#### natkretep

##### Moderato con anima (English Only)
I think the issue of the space between the number and the unit is not quite as cut and dried as suggested. Marsbeing, perhaps you can look at this thread?

space or no space before cm, m, mm etc.?

#### marsbeing

##### Senior Member
Many thanks for the link, natkretep. I will take a look.

#### marsbeing

##### Senior Member
If I saw "a 40m and 20m pool" it would suggest to me two pools, one 40m and the other one 20m.
I am just a bit curious, is a 40 m pool one with four sides 40 metres long?

#### natkretep

##### Moderato con anima (English Only)
I would assume that, marsbeing. The length is usually more significant for a swimming pool. I'd assume that a 40m pool was forty metres long and a 20m pool was twenty metres long.

#### marsbeing

##### Senior Member
I'd assume that a 40m pool was forty metres long and a 20m pool was twenty metres long.
Thanks for confirming this, natkretep. Just to be sure, a 40 m pool is 40 metres long, but the width can be different, is that right?

I am sorry if I appeared too pedantic.

#### natkretep

##### Moderato con anima (English Only)
Yes, if you say there is a 40-metre pool, you are specifying the length but not the width. (Sometimes people talk about the width in terms of the number of lanes rather than actual length as well: 'an 8-lane, 40-metre pool'.)

#### marsbeing

##### Senior Member
I see. Thank you very much for your help. I appreciate it. : )

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