DEnsity of a cuboid

What is the density of a building board in the shape of a cuboid with dimensions 1 m × 20 cm × 20 cm, if its mass is 84 kg?

Final Answer:

ρ =  2100 kg/m3

Step-by-step explanation:

a=1 m b=20 cm→ m=20:100  m=0.2 m c=b=0.2=51​=0.2 m  m=84 kg  V=a⋅ b⋅ c=1⋅ 0.2⋅ 0.2=251​=0.04 m3  m = ρ V  ρ=Vm​=0.0484​=2100 kg/m3

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solid geometryUnits of physical quantitiesGrade of the word problem

 
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