# 25 mm is equal to how many cm?

Sep 8, 2016

25mm = 2.5cm

#### Explanation:

Using the $\textcolor{b l u e}{\text{related conversion}}$

That is $\textcolor{red}{\overline{\underline{| \textcolor{w h i t e}{\frac{a}{a}} \textcolor{b l a c k}{1 c m = 10 m m} \textcolor{w h i t e}{\frac{a}{a}} |}}}$

$\Rightarrow 25 m m = \left(2 \times 10 m m\right) + \left(\frac{1}{2} \times 10 m m\right)$

so we have $2 + \frac{1}{2} \text{cm"=2 1/2=2.5"cm}$

or using $\textcolor{b l u e}{\text{ratio method}}$

$\frac{1 c m}{10 m m} = \frac{x c m}{25 m m} \text{ require to calculate value of x}$

using $\textcolor{b l u e}{\text{cross-multiplication}}$

$\Rightarrow 10 x = 25 \Rightarrow x = \frac{25 \cancel{m m}}{10 \cancel{m m}} = 2.5 \text{ cm}$