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

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

1. A
105
2. B
89
3. C
99
4. D
84

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### 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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