Answer:
678.24mm³
Step-by-step explanation:
The volume of the cone is computed using the formula:

Where:
r = radius of the circular base
h = height of the cone
π = 3.14
We are given the following:
r = 6mm
h=18mm
π = 3.14
So now that we have that, we just fill in the formula:

 
        
                    
             
        
        
        
Answer:
m=4
n=3
Step-by-step explanation:
m+2n=10 
2n+3m=18
Subtract 
-2m=-8
m=4
Solve for n
(4)+2n=10
2n+3(4)=18
2n=10-4
2n=18-12
2n=6
n=3
 
        
             
        
        
        
1. Simple interest
2. Time spent driving
3. rate of interest
4. Time money is invested. 
5. Rate of speed
6. distance
Not completely sure.
        
                    
             
        
        
        
Answer:
It becomes 30 
Step-by-step explanation:
When you double a number, it’s increases to two of itself .
So double of 15 means 15 x 2
= 30