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Area and Volume Expansion

When some met...

Question

When some metal cubes, with edges of $2 c m$ each, were dropped into the tank, the water level increased by $2 c m$ . Find the number of cubes in the tank

A

6

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B

10

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C

12

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D

15

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Solution

The correct option is B $10$
Number of cubes $=$ $\frac{V o l u m e o f w a t e r i n t a n k}{v o l u m e o f 1 c u b e} = \frac{8 \times 5 \times 2}{{(2)}^{3}} = \frac{80}{8} = 10$

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