Answer:
   5956 ft
Step-by-step explanation:
If we designate the points at the bases of the skyscrapers as A and B, and the top of skyscraper B as point T, then triangle ABT is a right triangle with angle B = 90° and angle A = 13.7°.
The definition of the tangent function tells us ...
   tan(A) = BT/AB
Solving for AB, we find ...
   AB = BT/tan(A) = (1452 ft)/tan(13.7°)
   AB ≈ 5956 ft
The skyscrapers are about 5956 feet apart.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Surface area = 2πr(h+r)
= 2 * 3.14 * 8*(8+12)
=2*3.14*8*20
= 1004.8 square unit
 
        
             
        
        
        
The answer is -6 < x < 9.
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