A hollow cube $1\mathrm{.}0$ m on each side weighs $2\mathrm{.}4$ kN$.$The cube is tied to a solid

concrete block weighing $10\mathrm{.}0$ kN$.$Will these two objects float or sink in water? The

specific gravity of concrete is $2\mathrm{.}4.$ Show clearly your reasoning. calculation step by step