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How many paving stones each measuring 2.5m×2m are required to pave a rectangular courtyard 30 m long and 16.5 m wide?

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answer is C.

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Detailed Solution

Given:

In this, ABCD resembles the rectangle with length 30 m and breadth 16.5 m.
Area of the rectangle with length ‘l’ and breadth ‘b’ is:

Thus, area of the paving court as:

From the figure, EFGH resembles the rectangle with length 2.5 m and breadth 2 m.
So, we get the area of paving stones as:

The number of paving stones required:

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