27)How many significant figures do each of the following have?

a)50.01cm- 4 significant figures

b).00120cm- 3 significant figures

c)82,400cm- 3 significant figures

d)33 students- This has unlimited significant figures because the number of students can be counted exactly and is not measured

e)100.001cm- 6 significant figures

f)the product of a times b- 50.01cm(.00120cm)= 0.0600cm^2-3 significant figures

g)the sum of a and c- 50.01cm + 82,400cm= 82,450cm- 4 significant figures