The answer is 54 hope this helps
 
        
             
        
        
        
Answer:
divide perimeter by 3
Step-by-step explanation:
all 3 sides of an equilateral triange are equal, so you can divide the perimeter by 3 to get the length of one side
 
        
             
        
        
        
Answer:
24.58
Step-by-step explanation:
 
        
             
        
        
        
Answer:
21 flowers 
Step-by-step explanation:
because if dora can plant 18 plants then Charlie can plant 21 flowers