Determine the number of significant figures in each of the following measurements
a). 11 soccer player
b). 0.070020 meter
c). 10,800 meters
d). 0.010 square meter
e). 5.00 cubic meters
f). 507 thumbtacks

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.All non-zero numbers are always significant. For example: 684, 6.24 and 85.4 all have three significant figures.All zero’s between integers are always significant. For example: 5605, 5.905 and 50.15 all have four significant figures.All zero’s preceding the first integers are never significant. For example: 0.0098 has two significant figures.All zero’s after the decimal point are always significant. For example: 4.400, 47.00 and 440.0 all have four significant figures.All zeroes used solely for spacing the decimal point are not significant. For example : 3000 has one significant figure.

A). 11 soccer player  : 2 significant figures

B). 0.070020 meter  : 5 significant figures

C). 10,800 meters: 5 significant figures

D). 0.010 square meter: 2 significant figures

E). 5.00 cubic meters: 3 significant figures

F). 507 thumbtacks: 3 significant figures

Answer is to avoid experimental error