Find the surface area of a hemisphere with a diameter of 26 cm. Round your answer to the nearest tenth.
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
The surface area of a sphere is 

. 
Hence, the surface area of a hemisphere is half that, 

. 
If the base is also included then the surface area will be 

.
Given,
Diameter = 26 cm
Therefore, Radius = 

 = 13 cm
Thus, 
Area = 

 = 1592.8 

 [approx.]
 
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