Question

How many $cm$ equals $1km$ and how?

Answer 1

Conversion of $cm$ to $km$:

We know that,

$1km=1000m$

Again,

$1m=100cm$

$\therefore 1km=\left(1000\times 100\right)cm$

$={10}^{5}cm$

Hence, ${10}^5$ centimeters make a kilometer.