Using the formula for area of a circle:
Area = pi x radius^2
Replace area with the given value:
39.62 = pi x radius^2
Divide both sides by pi
Radius^2 = 39.62/pi
Radius^2 = 12.62
Solve for radius by taking the square root of both sides
Radius = sqrt(12.62)
Radius = 3.55 cm
 
        
             
        
        
        
Answer:
Step-by-step explanation:
prime factors of 20 = 2 * 2 * 5

 
        
             
        
        
        
Answer:
I really don't know but just use a calculator 
 
        
                    
             
        
        
        
Answer:
14w
Step-by-step explanation:
Width = w
Length is 6 time its width. so, multiply w by 6
length = 6*w = 6w
Perimeter of rectangle = 2* (length + width)
                                         = 2*(6w + w)
                                         = 2*7w
                                          = 14w
 
        
             
        
        
        
Answer:
76
Step-by-step explanation:
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