6.4 cm
6.4 cm
The 3 and the 2.
1050 contains 4 significant digits and cannot be rounded to two significant figures without changing the value of the number.
2 of them.
38 cm
38 kg
2 of them.
There are two significant figures which are the two 2s.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
0.023kg has two significant figures. All non-zero digits are always significant. Leading zeroes, which only determine the decimal place, are never significant.
22.1 to two significant figures = 22
23.81558 to two significant figures is 24.