Answer: Um...is there supposed to be a link? I'll edit my answer if there is.
 
        
             
        
        
        
Let E=elevation range
Low elevation=1700≤E≤2500<span>
Mid elevation= 2500</span>≤E≤4000<span>
Sulbarine=4000</span>≤E≤6500<span>
Alpine=6500</span>≤E<span>≤14,410</span>
        
             
        
        
        
 Answer:
Cost = 616000 DHS per square centimetre.
Step-by-step explanation:
curved surface of a cylinder = 2 rh
rh
r = 7 cm
h = 1400 m = 140000 cm
The outer curved surface area of the cylinder = inner curved surface area of the cylinder
The inner curved surface of the cylinder = 2 rh
rh
                                       = 2 x  x 7 x 140000
 x 7 x 140000
                                       = 2 x 22 x 1 x 140000
                                       = 6160000
The inner curved surface of the cylinder is 6160000 square centimetre.
But, the cost of painting is at the rate of 10 DHS per square centimetre.
The inner curved surface of the cylinder = 6.16 x  square centimetre.
 square centimetre.
cost of painting the inner curved surface area = 
                                                                        = 616000 DHS per square centimetre
The cost of painting the inner surface is 616000 DHS per square centimetre.
 
        
             
        
        
        
Answer:
21°
Step-by-step explanation:
the angles of triangle abc has to = 180 so subtract the known angles to get 21
angles bca and daf have to be the same so its 21
 
        
                    
             
        
        
        
The base is 16 and height of each triangle is 2