Answer:

Step-by-step explanation:
The given relation is

To make
the subject, we square both sides of the equation to get;


Isolate
on one side of the equation;

Or

We take the positive square root of both sides to get;

1 centimetre=0.1 decimetre
therefore the answer is 2.5 decimetres.
What are you trying to do with this?
Answer:
Answer A. 30 I believe.
Step-by-step explanation: