Fewer meters, centimeters are too small of a unit to measure a doorway
        
                    
             
        
        
        
This is a combination problem. 
6 nCr 2

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Answer:
11.1
Step-by-step explanation:
i just did the math and that came out
 
        
             
        
        
        




Use the identity:  and solve for
 and solve for  . You get:
. You get: 
Do the substitution on the left side to get:
