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A rectangular courtyard 3.78 m long and 5.25 m broad is to be paved exactly with square tiles, all of the same sizes.
The minimum number of such tiles is:

A.350
B.450
C.460
D.470
Answer and Feedback
Answer:B
Feedback:l = 378 Cm and b = 525 Cm
Maximum length of a square tile
= HCF of (378,525) = 21 Cm
Number of tiles = (378×525)/(21×21) = (18×25) = 450

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