Answer:
A = 616 cm^2
Step-by-step explanation:
The area of a circle is given by
A = pi r^2
A = pi (14)^2
A = pi (196)
Using 3.14 as an approximation for pi
A = 3.14 *196
A =615.44
The nearest approximation is 
A = 616 cm^2
 
        
                    
             
        
        
        
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Answer:  5 cos x
<u>Step-by-step explanation:</u>
y = sin x     is       y = cos x        shifted to the right π/2 units.
y = 5 sin (x + π/2)     is a shift to the left π/2 units (which results in cos x) and    .                                 an amplitude of 5.
--> y = 5 cos x
 
        
             
        
        
        
The value of x is 1.25 or 1 1/4
Explanation
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275x=500-125x 
Move variable to the left side and change its sign
275x+125x=500
Collect the like terms
275x+125x=500 =====> 400x=500
Divide both sides of the equation by 400
400x/400=500 =======> x=5/4 which is the same as 1 1/4 or 1.25
Hope this helps : )