Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit.If you are measuring an object with length between 8 and 9 cm,how many significant figures will result if you only use the part of the meter stick between the 82-cm and 93-cm positions?
A)0
B)2
C)3
D)4
E)more than 4

Question

Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit.If you are measuring an object with length between 8 and 9 cm,how many significant figures will result if you only use the part of the meter stick between the 82-cm and 93-cm positions?
A)0
B)2
C)3
D)4
E)​more than 4

Quizplus · Accepted Answer

The part of the meter stick between the 82-cm and 93-cm positions measures a length of 11 cm. Since the last significant figure is in the tenth of a millimeter digit, we need to convert 11 cm to millimeters and round to the tenths place. 
11 cm = 110 mm 
Rounding to the tenths place, we get 110.0 mm. 
Since the length of the object being measured falls between 8 and 9 cm, only the first digit (1) and second digit (0) are significant. Therefore, there are 2 significant figures in the measurement taken using the part of the meter stick between the 82-cm and 93-cm positions.

Assume When Using a Meter Stick Measuring Can Be Done