Depends on the currency that you are referring to.
a 30cm ruler
30cm is about 12 inches or 1 foot in length
20g
A 30cm Ruler.
Look at a ruler, if you don't know....
Yes.
In a standard 30cm ruler there are 300mm (discluding the bits at the end of the rulers which are unmarked).
Anything that measures length: a 30cm ruler, a metre ruler, a tape measure etc.
Depending on the size of it id say either a 15cm ruler or a 30cm ruler.
Depending on the size of it id say either a 15cm ruler or a 30cm ruler.
On a 30cm ruler you can't get it exactly, you need a higher tech ruler which has the markings of 2.54cm. If you have a normal ruler you have to estimate.
A normal ruler from England measures 30cm and 12inches, or 15cm and 5 inches depending on how big you want it.