8 ft is the answer to the question, hope this helps
        
             
        
        
        
Answer:
IK
Step-by-step explanation:
If you draw out the triangles it is easier to see
 
        
             
        
        
        
Answer:
M equals 9.3
Step-by-step explanation:
To get m alone add 4.2 to each side
 
        
             
        
        
        
Answer:
3^(2/15) 
Step-by-step explanation:
Ask in comments if you want.