Question

1. An object is 70 micrometers long and 47.66 micrometers wide.how long and wide is the object in km?

Answer 1

(a)

$$l=70\ \mu m\cdot\dfrac{10^{-6}\ m}{1\ \mu m}\cdot\dfrac{1\ km}{10^3\ m}=7.0\cdot10^{-8}\ km.$$

(b)

$$w=47.66\ \mu m\cdot\dfrac{10^{-6}\ m}{1\ \mu m}\cdot\dfrac{1\ km}{10^3\ m}=4.7\cdot10^{-8}\ km.$$