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Mathematics, 02.04.2020 21:32 dorkygirl

A thirsty crow wants to raise the level of water in a cylindrical container so that it can reach the water with its beak.
The container has a diameter of 2 inches and a height of 9 inches
The water level is currently at 6 inches
The crow can reach the water if it is 1 inch from the top of the container.
The crow puts pebbles in the water to raise the water level
If the pebbles have a diameter of 1/2 inches , what is the fewest number of pebbles the crow needs to drop in the water to reach the water?

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