Identical 32493

Forty identical traffic cones with base diameter d = 36 cm and height v = 46 cm are to be painted orange on the outside (without base). How much do we pay for paint if we need 500 cm3 of paint to paint 1 m2 and 1 liter of paint costs CZK 8?

Correct answer:

x =  44.6928 Kc

Step-by-step explanation:

n=40 d=36 cm v=46 cm  r=d/2=36/2=18 cm s=r2+v2=182+462=2 610 cm49.3964 cm S1=π r s=3.1416 18 49.39642793.2981 cm2  S=n S1=40 2793.2981111731.9253 cm2  S2=S m2=S:10000  m2=111731.9253:10000  m2=11.17319 m2  V2=500 cm3 l=500:1000  l=0.5 l  b=S2 V2=11.1732 0.55.5866 l p=8 Kc/l  x=b p=5.5866 8=44.6928 Kc



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