What is the approximate uncertainty in the area of a circle of radius 3.1×104cm? Express your answer using one significant figur
e. ΔA =
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
The area of a circle is expressed as:
Area = πr²
where r is the radius of the circle. This equation is used to calculate the area of the circle above. Calculation is as follows:
A = π(3.1 x 10^4 cm)² = 3.0 x 10^9 cm²
                                
             
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FE or line EF can be two other ways you could name EF
        
                    
             
        
        
        
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