# What is "44.7 cm" in nanometers?

Sep 9, 2017

$\text{44.7 cm"=4.47xx"10"^8 "nm}$

#### Explanation:

Write the equality between cm and nm.

$\text{1 cm"=1xx"10"^7 "nm}$

There are two conversion factors from this equality.

"1 cm"/(1xx10^7"nm")$\textcolor{w h i t e}{. .}$and$\textcolor{w h i t e}{. .}$ $\left(1 \times {10}^{7} \text{nm")/(1"cm}\right)$

Multiply $\text{44.7 cm}$ by the conversion factor that cancels cm and leaves nm.

44.7color(red)cancel(color(black)("cm"))xx(1xx10^7"nm")/(1color(red)cancel(color(black)("cm")))=4.47xx10^8