It would be...C?? I'm not sure but I think it's right. Brainliest?
        
             
        
        
        
Answer:
10:5 can be simplified both numbers are divisible by 5
10/5=2 5/5=1
2:1 
Step-by-step explanation:
 
        
             
        
        
        
 I think the perimeter is at least 6m
        
             
        
        
        
 Is the base (leght width) plus the areas of each of the four triangular faces