Question

Suppose that you measure a pen to be 10.6 cm long. Convert this to meters. Express the length in meters to three significant figures.

Answer 1

Use dimensional analysis:

$\frac{10.6cm}{1}*\frac{1m}{100cm}=0.106m$

Since we multiplied a numerator and a denominator by centimeters, we are only left with meters.

This answer is already is three significant figures by default.