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Answer : 2 4 % Explanation : Answer: B) 4 % Explanation: Imension of the duster is assumed as 5x5x7 cm3Volume of the duster below the water layer= volume of water increased= πxrxrxh = 3.14×52×2.14 ≈ 168 cm3Total volume of the duster = 5×5×7 = 175 cm3Percentage of the duster part below the layer = 168×100/175 = 96%Percentage of the duster part above the layer = 4%

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