We know, Volume of a Cone = πr² h/3
v = 3.14 * (6)² * 11.4/3
v = 3.14 * 36 * 3.8
v = 429.552
Now, for 1 m³, it costs = $20
So, for 429.552 m³, it will be: 20 * 429.552 = 8591
In short, Your Answer would be $8591
Hope this helps!
        
                    
             
        
        
        
You need to find 24% of $7000 because that's the total interest over the course of 3 years. The answer is $1680
        
                    
             
        
        
        
 
3. {6,9,15)
for these u have use Pythagoras theorem
 
        
             
        
        
        
x²-6x=0
x(x-6)=0
Two solutions are possible:
x=0
x=6