Water reservoir

What is the weight of a metal reservoir - cylinder with a diameter of 2 m and a length 8 m, if 1 m2 of sheet metal weighs 100 kg?

Correct result:

m =  5026.5482 kg

Solution:

D=2 m l=8 m  r=D/2=2/2=1 m  S1=p⋅ r2=p⋅ 12=0 m2 S2=π⋅ D⋅ l=3.1416⋅ 2⋅ 8≐50.2655 m2  S=2⋅ S1+S2=2⋅ 0+50.2655≐50.2655 m2 h=100 kg/m2  m=h⋅ S=100⋅ 50.2655=5026.5482 kg

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