Answer:  
Step-by-step explanation:
 1. To solve this problem you must use the following formula for calculate the volume of a right circular cylinder, which is shown below:
 
 Where r is the radius and h is the height.
 2. Now, you must substitute the values given in the problem. Therefore, you obtain the following result:
 
 
 
 
        
                    
             
        
        
        
Answer: b=14.7
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation: dont work sorry
 
        
             
        
        
        
Answer:
x = 9
Step-by-step explanation:
-2x + 3 = -15
-2x = -18
x = 9 
 
        
                    
             
        
        
        
<u>Answer-</u>

<u>Solution-</u>
The equation for time period of a simple pendulum is given by,

Where,
T = Time period,
L = Length of the rod,
g = Acceleration due to gravity.
Frequency (f) of the pendulum is the reciprocal of its period, i.e

Putting the values,



