Answer:
x  9
 9
Step-by-step explanation: i took a quiz with this on it
 
        
                    
             
        
        
        
Answer: The answer is 870
If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.
 
        
             
        
        
        
Answer:
use calculater please it will not take long
 
        
                    
             
        
        
        
Answer:
The surface area that Sergio needs to frost on each cake is 3,238 square centimeters
Step-by-step explanation:
The picture of the question in the attached figure
we know that
The surface area of the cylindrical cake is equal to the lateral area plus the area of the top of cylinder (remember that the bottom of the cake does not need frosting)
so

we have
 ---> the radius is half the diameter
 ---> the radius is half the diameter


substitute the given values


 Round up to the  nearest whole number

therefore
The surface area that Sergio needs to frost on each cake is 3,238 square centimeters