Diameter 9271

How many kg of paint do we need to paint a cylinder with a diameter of 60 cm and a length of 2 meters if we use 0.5 kg of color for one square meter of surface? How much will we pay for paint if 1 kg costs CZK 165?

Correct answer:

m =  2.1677 kg
c =  357.6703 kc

Step-by-step explanation:

D=60 cm m=60:100  m=0.6 m h=2 m  r=D/2=0.6/2=103=0.3 m ρ=0.5 kg/m2  S=2π r2+2π r h=2 3.1416 0.32+2 3.1416 0.3 24.3354 m2  m=ρ S=0.5 4.3354=2.1677 kg
c=165 m=165 2.1677=357.6703 kc



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