Question

what is ratio of 1mm to 1cm ?Give explanation

Answer 1

Hi... ☺

Here is your answer...✌
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First converting cm to mm
we have,
1 cm = 10 mm

Now,
Ratio of 1 mm to 1 cm

= 1mm / 1cm = 1mm / 10mm = 1/10

= 1:10

Answer 2

the ratio means comparison of the same quantity.

so let's first make both the quantity in the same unit.

1 cm = 10 mm

1mm : 10 mm

so the ratio is 1 : 10