Copper plate

Calculate the thickness of the copper plate with a density 8.7 g/cm³ measuring 1.5 meters and 80 cm and its weight is 3.65 kg

Correct result:

h =  0.3496 mm

Solution:

m=3.65 kg→ g=3.65⋅ 1000  g=3650 g ρ=8.7 g/cm3  a=1.5 m→ cm=1.5⋅ 100  cm=150 cm b=80 cm S=a⋅ b=150⋅ 80=12000 cm2 V=m/ρ=3650/8.7=3650087≐419.5402 cm3  h1=V/S=419.5402/12000=732088≐0.035 cm h=h1→ mm=h1⋅ 10  mm=0.035⋅ 10  mm=0.35 mm=0.3496 mm

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