A rectangular courtyard 3.78min long and 5.25m broad is to be paved exactly with square tiles all of the same size. The minimum number of such tiles is
Options:
A . 430
B . 440
C . 450
D . 460
Answer: Option C
l=378cm and b= 525cm Maximum length of a square tile = H.C.F (378cm 525cm) = 21cm
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