Question

Convert 145.0 mm to meters and express the answer to the correct number of significant digits

Answer 1

You need to use a conversion factor of 1000mm to 1 m. So divide by 1000.  Then you should have 4 digits total by the significant figure rules since the number in the problem is 4 digits.

Answer 2

Answer : The correct answer is, 0.1450 meter

Explanation :

Significant digits : 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.

According to the multiplication and division rules of significant digits, the least number of the significant digit in any number of the problem determines the number of significant digit in the answer.

The conversion of 145.0 mm into meter are :

`1mm=0.001m\\\\145.0mm=(145.0mm)/(1mm)* 0.001m=0.1450m`

In 145.0 mm, there are 4 significant digits and in 0.1450 m. there are 4 significant digits.

Therefore, the correct answer is, 0.1450 meter