# Answer on Geometry Question for Marky

Question #6053

Calculate the mass of a 3cm cube of aluminium.

I think the question is based on the previous that was in my book. It said: a 2cm cube of aluminium has mass 21.6g. It's density is 2.7g/cm<cubed>

I think the question is based on the previous that was in my book. It said: a 2cm cube of aluminium has mass 21.6g. It's density is 2.7g/cm<cubed>

Expert's answer

M = P*V, where P=2.7g/cm³ is the density of an aluminium

If the length of cube edge is 3 cm then volume of such cube is 3*3*3=27 cm

Now substituting value of volume we get

M = 2.7g/cm³*27cm³ = 72.9g.

If the length of cube edge is 3 cm then volume of such cube is 3*3*3=27 cm

^{3}Now substituting value of volume we get

M = 2.7g/cm³*27cm³ = 72.9g.

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