It depends what kind and size of the ruler. Unless it is a very big ruler it would weigh maybe, 50 to 200 g.
1000 g = 1 kg
30 centimeters
It is centimeters and inches.
Depends how long the ruler is obviously. But if you are talking about a meter stick (very close in size to a yard-stick) then it is 100 cm.
To show 0.13 meters on a centimeter ruler, you would convert meters to centimeters, as there are 100 centimeters in a meter. 0.13 meters = 13 centimeters. Locate the 13 cm mark on the ruler to represent 0.13 meters.
In a standard 30cm ruler there are 300mm (discluding the bits at the end of the rulers which are unmarked).
30 centimeters
Usually 30.
For a small ruler . There are 15 cm in 1 ruler. wheras a big ruler has 30 cm in a ruler.
30.48 cm
100 centimeters.
A ruler is usually divided by: inches, centimeters, and millimeters.
An inch is bigger than a centimeter. The size of the rule depends on how many inches or centimeters you want it to be. One inch is equal to 2.54 centimeters. To convert inches into centimeters, divide the inches by 2.54.
The uncertainty of a ruler in centimeters refers to the smallest measurement that can be reliably determined using the ruler. This uncertainty is typically around 0.1 centimeters, meaning that measurements taken with the ruler may have a margin of error of up to 0.1 centimeters.
The customary ruler uses both inches and centimeters.
a 30cm ruler
4 inches are 10.16 centimeters.
3 inches if on the inches side, 3 centimeters if on the centimeters side.