Answer:
His error is multiplying by 4 sides as he thought it was total surface not lateral surface area- the final answer is 12
Step-by-step explanation:
He should have multiplied it by 3, because the 3 sides- not including the base- is what lateral surface area is. He originally did total surface area not lateral surface area so each sides area is 4m squared then you just multiply it by 3 and its 12
 
        
                    
             
        
        
        
Equation = 2x + 7
Y-intercept = (0,7)
        
             
        
        
        
Answer:
Step-by-step explanation:
Hello, please consider the following.

Thank you
 
        
             
        
        
        
Answer:
72
Step-by-step explanation:
 
        
             
        
        
        
Answer:
the bottom problem answer is 'cd=√36'