Hi all

Im currently doing some design work and need some help with ratio's

I have worked out that 1cm in my software equals 5.5cm in the real world.

I now need to add a border which I know is 3cm in the real world.

So 1cm = 5.5cm

What does 3cm equal?

I did 5.5/3 = 0.54

So 3 cm = 0.54 cm

Is that right??(Worried)