6.4 cm
38 cm
The 3 and the 2.
2 of them.
38 kg
38 cm
2 of them.
1050 contains 4 significant digits and cannot be rounded to two significant figures without changing the value of the number.
3 significant figures.
The value of 3.6 has TWO significant figures.
There are 2 significant figures in this number.
There are two significant figures which are the two 2s.