Cylindrical 28331

How many crowns will the paint cost to paint a cylindrical container (d = 4.2 m, h = 5.5 m) when about 5 m2 of paint is painted from 1 kg of color, and 1 kg of paint cost 115 CZK?

Correct answer:

x =  2306.43 kc

Step-by-step explanation:

d=4.2 m v=5.5 m r=d/2=4.2/2=1021=2.1 m  S1=π r2=3.1416 2.1213.8544 m2 S2=2π r v=2 3.1416 2.1 5.572.5708 m2  S=2 S1+S2=2 13.8544+72.5708100.2796 m2 c=115/5=23 Kc/m2  x=S c=100.2796 23=2306.43 kc

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