Answer
$15~mm=1.5~cm$
$50~mm=5~cm$
See image.
Work Step by Step
We convert mm to cm ($10~mm=1~cm$):
$15~mm*\frac{1~cm}{10~mm}=1.5~cm$
$50~mm*\frac{1~cm}{10~mm}=5~cm$
See image.
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