Check the picture below.
so, a cone, that fits inside the cylinder, will have the same height "h" and radius "r".  Thus
 
 
        
        
        
A multiplicative inverse of an integer a is an integer x such that the product ax is congruent to 1 with respect to the modulus m.  
1. 
Check: 
The multiplicative inverse of 5 in  is 9.
 is 9.
2.   
Check: 
The multiplicative inverse of 5 in  is 5.
 is 5.
3.  
Check: 
The multiplicative inverse of 5 in  is 8.
 is 8.
 
        
             
        
        
        
Answer:
Here are the formulae you need. Just plug in the values you have and you will get your answers.
Area of a triangle: 1/2*base*height
Volume of a rectangular prism: length*width*height
Volume of a cylinder: pi*r^2*height
Step-by-step explanation:
 
        
             
        
        
        
In the given question, the options are related to linear pair .
And according to linear pair, if a line cuts another line at a point, then the sum of the adjacent angles formed at that point is 180 degree.
Therefore, from the given diagram we can say that, angles WXY and YXZ are linear pair, so there sum have to be 180.

And the correct option is the third option .