Question

please answer this fast i will mark you as brainliest​

Answer 1

The main standard unit of length is Meter. The short form of meter is ‘m’.

first one

Answer 2

Answer:

1. Metre and Second

2. Unit to measure Distance of star from earth = AU (Astronomical unit)

3. i) standard unit should be not too small nor too large

ii) Standard units should be easily understand for all

4. For Balance Weighing Machine is IMP

5. This question is not accessible to me the word is not clear to me....