# Which of the Following Is Not Equal to 50 Millimeters?

## Question: <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;} -->  Which of the following is not equal to 50 millimeters? a) 5,000,000 nanometers    b) 0.05 meters    c) 5 centimeters    d) 50,000 micrometers

To answer this question we need to convert al the values to a common unit using the metric system

## Answer: Option a) - 5,000,000 nanometers is not equal to 50 millimeters

Let's use the common unit that is meter and convert all the other units in terms of meters

## Explanation:

50 millimeters = 50 × 10-3 meters = 5 × 10-2 m                                   (since, 1mm = 10-3 m)

5,000,000 nanometers = 5 × 106 × 10-9 = 5 × 10-3 m                         (since, 1nm = 10-9 m)

0.05 meters = 5 × 10-2 m

5 centimeters = 5 × 10-2 m                                                                   (since, 1cm = 10-2 m)

50,000 micrometers = 5 × 104 × 10-6 = 5 × 10-2 m                              (since, 1μm= 10-6 m)