The reading of a scale at one end is 3.5 cm and at the other end is 18.5 cm. Calculate the lengths of the needle
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
15 cm
Step-by-step explanation:
Given that :
Reading at one end, initial reading = 3.5 cm
Reading at the other end, final reading = 18.5 cm
Length of needle :
Final Reading - Initial reading
18.5cm - 3.5cm
= 15cm
 
                                
             
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The correct answer would be A), because the two shortest sides should be greater than the longest side when added together. 
 
        
             
        
        
        
        
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