Answer:
The answer is the option 
Step-by-step explanation:
see the attached figure with letters to better understand the problem
we know that

 -----> by vertical angles
 -----> by vertical angles
 -----> given problem
 -----> given problem
 -----> given problem
 -----> given problem
substitute

 
        
                    
             
        
        
        
I need help with this too it’s confusing and I don’t understand it.
 
        
                    
             
        
        
        
12 inches go into one foot, so we can calculate the volume of the tank in inches to make the calculations that follow easier. Therefore, to calculate the volume of the tank, we use length x breadth x height = 4 x 2 x 2 = 16 square feet x 12 for square inches = 192 square inches. 
Every 12 square inches Joseph can fit a one inch fish. The fish that he has are 3 inches long, therefore he can only fit one fish every 36 square inches. 
That means that if we take the total volume of the tank and divide it by the space that a 3 inch fish will take up, we are left with 192/36 = 5.3 fish.
You cannot have a third of a fish, so we round off to the nearest whole number, and we determine that Joseph can put 5 fish in his new aquarium.
        
             
        
        
        
C I think so sorry if I’m wrong