Answer : The length of the test tube in meter is 0.15 meter
Explanation :
The conversion used for length from centimeter to meter is:
1 cm = 0.01 m
As we are given the length of the test tube is, 15.0 cm. Now we have to determine the length of the test tube in meter.
As, 1 cm of length of the test tube = 0.01 meter
So, 15.0 cm of length of the test tube =

Therefore, the length of the test tube in meter is 0.15 meter