What is the ratio of $1 m m$ to $1 c m$ ?

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Solution

$1 m m = 10^{- 3} m$
$1 c m = 10^{- 2} m$
$∴ \frac{1 m m}{1 c m} = \frac{10^{- 3}}{10^{- 2}} = 10^{- 1} = \frac{1}{10}$

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What is the ratio of 1 mm to 1 cm?

1mm=10−3m1cm=10−2m∴1mm1cm=10−310−2=10−1=110

What is the ratio of $1 m m$ to $1 c m$ ?

$1 m m = 10^{- 3} m$
$1 c m = 10^{- 2} m$
$∴ \frac{1 m m}{1 c m} = \frac{10^{- 3}}{10^{- 2}} = 10^{- 1} = \frac{1}{10}$