Jorn Johanesson <[log in to unmask]> writes:
>
> 1cm2 equal to 1cm2
> 10cm2 equal to 1dm2 or 100 cm2
> 100cm2 equal to 1m2 or 10000 cm2
>
> 1cm3 equal to 1cm3 or 1ml
> 10cm3 equal to 1000cm3 or 1dm3 or 1l (1000ml) it is also 1kg of water at
20 degrees Celsius

It seems to me a very strangely written equation when 10=1000 with the same
dimension both sides.
Maybe, you wanted to say that:

1cm x 1cm equal to 1cm2
10cm x 10cm equal to 1dm2 or 100 cm2
100cm x 100cm equal to 1m2 or 10000 cm2

1cm x 1cm x 1cm  equal to 1cm3 or 1ml, and so on...

Sincerely
Rimantas Zujus