The correct answer is 9.42477796077 because pi 3.14ect you would just multiply it by 3 so the answer would be 9.42477796077
        
             
        
        
        
Let 
x--------> the measure of the adjacent interior angle
y--------> the measure of an exterior angle at the vertex of a polygon
we know that
The measure of the adjacent interior angle and the measure of an exterior angle at the vertex of a polygon are supplementary angles
so
 °
°
<u>Examples</u>
case 1) 
<u>In a square</u>
 °
°
so
 °
°

In this case 
The measure of an exterior angle at the vertex of a polygon equals the measure of the adjacent interior angle
case 2) 
<u>an equilateral triangle</u>
 °
°
so
 °
°

In this case 
The measure of an exterior angle at the vertex of a polygon is not equals the measure of the adjacent interior angle
therefore
<u>the answer is</u>
sometimes
 
        
                    
             
        
        
        
Answer:
casue i said so
Step-by-step explanation:
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Answer:
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Step-by-step explanation: