Please indicate how long each bar is in centimeters and millimeters.

First Bar- 1cm and 10 mm

Second Bar- 9cm and 90 mm

Third Bar- 4cm and 40mm

Fourth Bar- 6cm and 60mm

Explanation:

There are 10 millimeters in each centimeter, to find the centimeters you just count the number of big lines the bar goes through, and multiply that number by 10 to find the millimeters.

hope this helps!

1. --- cm 2 mm 10

2.--- cm 18 mm 90

3. -- cm 8 mm 40

4. --cm 12 mm 60