Question

The height of Rahul is $165$cm $0.9$ mm. What will be his height in cm?

Answer 1

Unit conversion in decimal

Height of Rahul = $165$ cm $0.9$ mm

As we know, $1\mathrm{cm}=10\mathrm{mm}$

Therefore, $0.9\mathrm{mm}=(0.9÷10)\mathrm{cm}$

$=$ $0.09\mathrm{cm}$

So, height of Rahul is $$\begin{gathered} =165+0.09 \\ =165.09\mathrm{cm} \end{gathered}$$