Yes.
It is 307 cm.
Three.
0.00185
The number 48 cm has two significant digits. The leading 0 is not significant in this case.
It is: 12.66 cm
1.004 cm
38 cm
4
8
There are four significant figures in 0.00301 cm. The non-zero digits (3 and 1) and zeros between them are all considered significant.
Four: All the digits given are significant.>> Two actually. Trailing zeros in a number without a dp are not significant unless emphasised in some way. The unit (mm) doesn't make any difference.
The measurement of 29.46 cm when rounded to three significant numbers becomes 29.5 cm