9cm is equal to what in mm

llm

Answered on Tue Dec 08 2020

We know that 1 cm is equal to 10mm. So lets create a ratio in order to find out the value of 9cm in mm that we will call it x.

If 1 cm is equal to 10 mm,

Then 9 cm is equal to x mm.

Cross multiply in order to create the equation. X times 1 is equal to 9 times 10.

x=9*10

x=90mm