Question

The diameter of an average size penny was found to be 1.95 cm. Which digit in the diameter of the penny represents the estimated digit?

A 1
B 9
C 5

Answer 1

The estimated digit in the diameter of a penny measured to be 1.95 cm is '5', representing the hundredths place, which shows the closest estimation possible with the measuring instrument.

Step-by-step explanation:

When measurements are taken, the last digit is often the one that is estimated because it falls between markings on a measuring device. In the case of measuring the diameter of a penny, which is given as 1.95 cm, it is the hundredths place that is estimated. This means that the digit in the hundredths place, which is 5, represents the estimation. Presumably, the person measuring judged the penny to be halfway between 1.9 cm and 2.0 cm, hence they reported it as 1.95 cm. As this measurement is close to a tenth of a millimeter and the precision of the instrument or method used dictates how precise the measurement can be, it's common practice to estimate to this level of detail.

Answer 2

Answer:- C) 5

Explanations:- The ending digit of a number is always estimated digit as the actual value might be slightly lower or greater than the estimated value. So, in measurements we record the results with one estimated digit that is uncertain digit.