The number of paving stones each measuring 2.5m x 2m required to pave a rectangular courtyard 30 m long and 17.5 m wide, are:
Answer: (2) 105
Area covered by a paving stone = 2.5 x 2 = 5.0 m square
The total area of a rectangular courtyard = 30 x 17.5 = 525 m square
Number of paving stones in courtyard = 525/5 = 105 stones.
Hence, the answer is (2) 105