That worked perfectly...thanks

"paul" wrote in message
...
yes you need to square your tile size in cm and then divide by 10000(ie
100X100)
so your formula would be
=a3/(power(a4,2)/10000),where a3 is the sq metres of you r room and a4 s
your tile size in cm
--
paul

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"S S" wrote:

Based on area.

B15 = width
C15 =length
D15 =Total sq meters
E15 = tile size (currently sq cms)
F15 = tiles required

this is the formula I am using =D15/(E15/10000)

What I want to do is in E15 just put in the tile size (say a 30cm tile)
rather than sq cms and have the formula convert this to sq cms, so
somehow
need to sq the number in E15. At least that is how my brain is telling
me.

thanks