Answer:
Area of circle = πr^2
Area of circle when diameter is 2x; r=x
 =πx^2
 
        
             
        
        
        
Answer:
The required value for the blank is 21.8696
Step-by-step explanation:
Consider the provided information,
4,275.50= 391/2 of ____
Replace blank with x.
4,275.50 = 391/2 of x
Use sign of multiplication for "of".

Solve the above expression for x.


Thus, the required value for the blank is 21.8696
 
        
             
        
        
        
Answer:
<h2>             39°</h2>
Step-by-step explanation:
A radius to the tangent point always forms a right angle with the tangent:
m∠XWY = 90° 
So:
   90° + 58° + x - 7° = 180°
     141° + x = 180°
         x = 39°
 
        
             
        
        
        
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