Density 20093

What is the weight of a wooden board 1.8 m long, 70 cm wide, and 5 cm high? The density of wood is p = 450kg / cubic meter.

Correct answer:

m =  28.35 kg

Step-by-step explanation:

a=1.8 m b=70 cm m=70:100  m=0.7 m c=5 cm m=5:100  m=0.05 m  V=a b c=1.8 0.7 0.05=100063=0.063 m3 ρ=450 kg/m3  m=ρ V=450 0.063=28.35 kg



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