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A wooden board of a base area and thickness is loaded with a stone. Calculate how much the stone weighs if the board is submerged in water to the top edge after loading it. The specific weight of wood is .
A board submerged with stone
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The weight of the stone is .
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and thickness 
is loaded with a stone. Calculate how much the stone weighs if the board is submerged in water to the top edge after loading it. The specific weight of wood is 
.
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