Answer:
72.38
Step-by-step explanation:
pi times 9.6
 
        
                    
             
        
        
        
Answer:
A. 
Step-by-step explanation:
 
        
             
        
        
        

The measure of the angle <u>x = 90°</u>

<u>Theorem Of Tangent</u>:-
 A radius is obtained by joining the centre and the point of tangency. The <u>tangent at a point on a circle is at right angles to this radius</u>.
A radius is obtained by joining the centre and the point of tangency. The <u>tangent at a point on a circle is at right angles to this radius</u>.
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Hope it helps you:)
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It would be 15.4 -8.1 , hope this helps
        
             
        
        
        
Answer:
a=8.06
A=29.74
B=60.26
Step-by-step explanation:
This is a right angled triangle and Pythagoras theorem is to be obeyed. 
To get c, we follow the Pythagoras rule that says
Hyp² = Opp² + Adj²
c= Hypotenuse
c²= a² + b²
c² = 4² + 7²
c² = 65
c = √65 = 8.06
For angle A, 
the opposing side to the angle = a = 4
The adjacent side to the angle = b = 7
Following trigonometry rule. 
Tan A = opp/adj
Tan A = 4/7
A = Tan–¹(4/7)
A = 29.74°
For angle B, 
Opposing side = 7
Adjacent side = 4
Tan B = 7/4
B = Tan-¹(7/4)
B = 60.26°