Move the decimal point to the right (add a zero), therefore, 825,740
        
                    
             
        
        
        
Answer:
7536 
Step-by-step explanation:
Given that:
Rate of decreasing of radius = 12 km/sec
Height of cylinder is fixed at = 2.5 km
Radius of cylinder = 40 km
To find:
The rate of change of Volume of the cylinder?
Solution:
First of all, let us have a look at the formula for volume of a cylinder.

Where  is the radius and
 is the radius and
 is the height of cylinder.
 is the height of cylinder.
As per question statement:
 = 40 km (variable)
 = 40 km (variable)
 = 2.5 (constant)
 = 2.5 (constant)

As  are constant:
 are constant:

 
        
             
        
        
        
543,000.1
543,000.2 
any decimal 
        
                    
             
        
        
        
Answer:
y = -1/4x^2 - x + 3 
Step-by-step explanation:
(-6,0) 
(-4,3)
(2,0)
36a - 6b + c = 0
16a -4b + c = 3 
4a + 2b + c = 0 
c = -4a - 2b 
36a - 6b - 4a -2b = 0
16a - 4b -4a - 2b = 3 
32a -8b = 0 
12a - 6b = 3
4a - b  = 0
4a - 2b = 1 
b = -1 
4a + 1 = 0 
4a = -1 
a = -1/4 
c = 1 + 2 = 3 
y = -1/4x^2 - x + 3