Answer:
h = A/πr²
Step-by-step explanation:
Surface area (A) of a cylinder = πr² × height (h) , where r is the radius.
h = A ÷ πr² = A/πr²
 
        
             
        
        
        
It would have to be number 2 if it's a dotted line, all the other options are incorrect unless you made a mistake with one or two of the symbols.
        
             
        
        
        
Greetings from Brasil...
Let's apply the given formula:
A = (1/2)·B·H
The base of this polygon (in this case, the triangle) is B
B = X² - 2X + 6
The height of this polygon is H and is H
H = X + 4
Applying these values (B and H) in the given formula.....
A = (1/2)·B·H
A = (1/2)·(X² - 2X + 6)·(X + 4)
A = (1/2)·(X³ + 2X² - 2X + 24)
A = (X³/2) + X² - X + 12
OR
A = (X³ + 2X² - 2X + 24)/2
 
        
                    
             
        
        
        
Answer:
It is a 40% increase 
Step-by-step explanation:
So first of all the formula is 
New-old/old
Or rate of change/ original 
SO th new is 350
THe old is 210
350-210=140
140/350 which is old is 2/5
2/5 is 40 percent 
So 40 percent increase