Density of the concrete

Find the density of the concrete of the cuboid-shaped column has dimensions of 20 x 20 cm x 2 m if the weight of the column is 200 kg.

Correct result:

h =  2500 kg/m3

Solution:

a=20 cmm=20/100 m=0.2 m b=20 cmm=20/100 m=0.2 m c=2 m  m=200 kg  V=a b c=0.2 0.2 2=225=0.08 m3  h=m/V=200/0.08=2500 kg/m3a=20 \ cm \rightarrow m=20 / 100 \ m=0.2 \ m \ \\ b=20 \ cm \rightarrow m=20 / 100 \ m=0.2 \ m \ \\ c=2 \ \text{m} \ \\ \ \\ m=200 \ \text{kg} \ \\ \ \\ V=a \cdot \ b \cdot \ c=0.2 \cdot \ 0.2 \cdot \ 2=\dfrac{ 2 }{ 25 }=0.08 \ \text{m}^3 \ \\ \ \\ h=m/V=200/0.08=2500 \ \text{kg/m}^3



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