Answer:
B: 54 square feet
Step-by-step explanation:
There are 3 feet in 1 yard. The scale model is 6 square yards. 
Multiply 6 by 3 to get the amount of square yards. 
There are 18 square yards in the actual playground. 
Since there are 3 feet in a yard, multiply 18 by 3. 
This gives you your answer:
54 square feet
 
        
                    
             
        
        
        
Owner would lose out on $100