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With considerable difficulty!
With a 30 cm ruler you can easily ascertain that the length is between 2 and 3 ruler-lengths: 600 mm and 900 mm. Maybe you can judge that the the remainder, after 600 mm is less than half of the 30 cm ruler. So that tells you that it is between 600 mm and 750 mm.
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How can you measure a 650 mm ribbon with a 30 cm ruler?
1 cm = 10 mm. Start with ruler at 0 and mark ribbon at 30 cm. Then place ruler at the mark and measure 30 cm more and make another mark- you are up to 60 cm or 600 mm. Then place ruler at this mark and measure 5 cm, or 50 mm. Now you have a 650 mm ribbon.
Which object is about 30 cm long?
A 30 cm object might be a remote.
What would you use to measure the length of a classroom'is it a meter ruler or a 30cm ruler?
You could use either, it's just a little more work with the 30 cm ruler, but the result will be the same.You could use either, it's just a little more work with the 30 cm ruler, but the result will be the same.
Is a meterstick a perfect tool to measure the dimensions of a magazine cover?
No, a metre stick is adequate, but a 12 inch or 30 cm ruler would be handier and possibly perfect.No, a metre stick is adequate, but a 12 inch or 30 cm ruler would be handier and possibly perfect.
What do you use to measure the length of an object?
a ruler is used to measure it and cm, sometimes inches to
