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Q2. A cube of side 2 cm has a density of 6 g cm. What is the mass of the cube?

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sanjibdas5930

ANSWER

[tex]given \: the \: length \: of \: one \: side \: of \: a \: cube \: \\ = 2cm \\ so \: we \: know \: the \: volume \: of \: a \: cube \: = {side}^{3} \\ so \: the \: volume \: of \: the \: cube \: here \: = {2}^{3} {cm}^{3} = \: 8 {cm}^{3} \\ we \: know \: density \: of \: a \: substance \: = \: \frac{mass}{volume} \\so \: mass \: = density \times volume \\ density = 6 \frac{g}{ {cm}^{3} } \\ volume \: = 8 {cm}^{3} \\ so \: \: mass \: = (6 \times 8)( {cm}^{3} \times \frac{g}{ {cm}^{3} }) \\ 48gram \: (ans) [/tex]

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