Answer:
Exact form: 53/10 , Decimal form: 5.3 , Mixed number form: 5 3/10
Step-by-step explanation:
 
        
                    
             
        
        
        
Sq root (54) =
sq root (9*5) =
3 * sq root (5)
        
             
        
        
        
Answer:
SA = 967.6 cm²
Step-by-step explanation:
Surface Area of cylinder = 
<u><em>Where r = 7 cm, h = 15 cm</em></u>
=> SA = 2(3.14)(7)(15)+2(3.14)(7)²
=> SA = 659.7 + 2(3.14)(49)
=> SA = 659.7 + 307.9
=> SA = 967.6 cm²
 
        
                    
             
        
        
        
I just took the test and the answer was D
50 in, 48 in, 14 in are the side lengths that form a right triangle