Wood prisms

How many weight 25 prisms with dimensions 8x8x200 cm? 1 cubic meter of wood weighs 800 kg.

Correct result:

m =  256 kg

Solution:

a=8 cm b=8 cm c=200 cm  n=25  V=n⋅ a⋅ b⋅ c=25⋅ 8⋅ 8⋅ 200=320000 cm3 V1=V→ m3=V/1000000  m3=320000/1000000  m3=0.32 m3  h=800 kg/m3  m=V1⋅ h=0.32⋅ 800=256 kg

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