Question

30.02 has 2 significant figures
true
false
100.001 has 3 significant figures
true
false
a good estimation for the length of the classroom in meters would be
30m
100m
10m
50m

Explanation:

Step1: Count significant - figures in 30.02

All non - zero digits and zeros between non - zero digits are significant. So 30.02 has 4 significant figures.

Step2: Count significant - figures in 100.001

All digits are significant, so it has 6 significant figures.

Step3: Estimate classroom length

A typical classroom length is around 10m. 30m, 100m and 50m are too long.

Answer:

1. B. false
2. B. false
3. C. 10m