REVISED ANSWER.
In the picture, I have drawn on the example given. the RC and PD are the same because They are across from each other perfectly. So the answer is still PD=400m but if there can be two answers then I would have to say another possiblity would be 200m for the diameter of the pond. The wording of this problem is tricky and the picture can throw you off a bit but I did my best to answer properly here.
So if you could mark brainliest that would be awesome.
 
        
             
        
        
        
Answer:
B:
Step-by-step explanation:
brainliest pls
 
        
                    
             
        
        
        
Answer:
146,736
Step-by-step explanation:
6114 divided by 24 is 146,736
 
        
                    
             
        
        
        
It'd be the first one. 
Look at it like this:
3x2=6
6x2=12
12x2=24
24x2=48
48x2=96
96x2=192
        
             
        
        
        
Step-by-step explanation:
the answer to your question is 1 and 4