Answer:
30 m
Step-by-step explanation:
You simply add the lengths of all the sides. 3 m is not needed for this. 
 
        
                    
             
        
        
        
Answer: 
 Step-by-step explanation:
 The first step to solve the exercise is to make the conversion from meters to centimeters.
 Since  , then the dimensions of the wood board in centimeters are:
, then the dimensions of the wood board in centimeters are:
 
 Now, you must find the Greatest Common Factor (GCF). The steps are:
 - Descompose 100 and 60 into their prime factors:
 
 - Multiply the commons with the lowest exponents:
 
 Therefore, the side lenght of each square must be:
 