Answer:
Area of the circle=
Step-by-step explanation:
Area of a circle=
For radius(r)=8 km
The area of the circle is :
                  =
As:    
     
Area of the circle:
                         
The Area of the circle with the radius of  is
 is 
 
        
                    
             
        
        
        
Answer:
I got it.
Step-by-step explanation:
-12a - (-15b) + (-3c)
 
        
             
        
        
        
Answer: Choice D
======================================================
Explanation:
The formula for the surface area of a cylinder is

We then replace r with 10 and h with 25. Keep in mind that the diameter is 20 mm, so the radius is half that at 10 mm.
So that's how we get to 

 
        
                    
             
        
        
        
Answer:
0.6302494097
Step-by-step explanation:
Multiply 0.95, 9 times. Not 0.95×9 though.