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.

Result

h =  2500 kg/m3

Solution:

$a = 20 \ cm = 20 / 100 \ m = 0.2 \ m \ \\ b = 20 \ cm = 20 / 100 \ m = 0.2 \ m \ \\ c = 2 \ m \ \\ \ \\ m = 200 \ kg \ \\ \ \\ V = a \cdot \ b \cdot \ c = 0.2 \cdot \ 0.2 \cdot \ 2 = \dfrac{ 2 }{ 25 } = 0.08 \ m^3 \ \\ \ \\ h = m/V = 200/0.08 = 2500 = 2500 \ kg/m^3$

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