A cubical block of wood \( 10 \mathrm{~cm} \) on a side floats at t...

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A cubical block of wood \( 10 \mathrm{~cm} \) on a side floats at the interface between oil and water with its lower surface horizontal and \( 4 \mathrm{~cm} \) below the interface. The density of oil is
\( \mathrm{P} \) \( 0.6 \mathrm{~g} \mathrm{~cm}^{-1} \). The mass of block is

W
\( \begin{array}{lll}\text { (A) } & 706 \mathrm{~g} \text { (B) } \\ \text { (C) } & 760 \mathrm{~g} & \text { (D) }\end{array} \)
\( 607 \mathrm{~g} \)
\( 670 \mathrm{~g} \)
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