Answer:
Option A 
Step-by-step explanation:
we know that
The volume of a cone is equal to

In this problem we have

substitute the values


 
        
                    
             
        
        
        
Answer:
2x+20+3x+10 = 180 (int. angles, parallel)
5x+30 = 180
5x=150
x=30
 
        
             
        
        
        
Answer: 
30
Step-by-step explanation:
x = 7
( x - 4 )^2 + 3x
= ( 7 - 4 )^2 + 3 ( 7 )
= 3^2 + 21
= 9 + 21
= 30 
 
        
                    
             
        
        
        
D would be the correct answer. Post brainliest if this helped plz :)
        
             
        
        
        
Find the area of the blue square including the white square then find the area of the white square and subtract that from the area of the blue square. 
Hope that helps if you need more help just comment and I’ll try to explain it better!