It's an arithmetic progression with first term = 8 and common difference d =2:
so the next term is 14 + 2 = 16
        
             
        
        
        
The answer is about 3.3333
        
                    
             
        
        
        
Look at the picture.
Angle a:
Vertical angles are equal
Angle b:
(ΔABC). In a triangle, the three interior angles always add to 180°
Angle c:
<span>Angles on one side of a straight line will always add to 180 degrees. </span>
 
        
        
        
Volume of a cone = (1/3) * Area of Base * height
144 * 3 / 9 = Area of Base
Area of the Base = 48
        
                    
             
        
        
        
Answer: 
key is 18
exit tag is 15
lock is 14
key*tag*lock = 3780
Step-by-step explanation:
54/3 is 18 so each key is 18
48-key = 30 so each tag is 15 since 15+15 = 30
18*15*14=3780