21,600 using only four significant figures is still 21,600.
840 using four significant figures is 840.0
61.37795276 in four significant figures is 61.38
There are four significant figures in 0.1111.
There are four significant figures in .007001
Four of them.
The number 3,072 has 4 significant figures.
100,3 has four significant figures.
Four significant figures.
It has four significant figures
0.00431209461 with four significant figures is 0.004312
241.9956 rounded to four significant figures is 242.0