Answer:
Closely wrap the thread 10 times around a cylinder.
- use the Meter rule to measure the beginning and the end
- Repeat three times and get the average length i.e the circumference
- Use the formulae ??/??= D to find the diameter
Step-by-step explanation:
You first wrap the threat around the cylindrical object.At the point were the thread meets its beginning place a mark.Remove the threat and using a ruler measure its length ,this gives the outer circumference of the cylindrical object
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