Marbles of diameter 1.4 cm are dropped into a beaker containing some water are fully submerged.

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asked Mar 16 in Class X Maths by aditya23 (-854 points)

Marbles of diameter 1.4 cm are dropped into a beaker containing some water are fully submerged. The diameter of beaker is 7 cm. Find how many marbles have been drapped in it if the water rises by 5.6 cm.

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1 Answer

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answered Mar 16 by muskan15 (-2,499 points)

Volume of water that rises in putting marbles in the beaker.

= π(7/2)2 × (5.6) cu cm.

Volume of one marble = 4/3π(0.7)3  cu cm.

∴  Number of marbles = π(7/2)2 × 5.6/4/3π(0.7)3 = 150

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