square shaped tiles of side 40cm are to be fixed in a hall of dimensions 2.4 dam by 16m.find the number of tiles required

Dear student
We know that 1dam=1000 cmSo, 2.4 dam=2.4×1000  cm=2400 cmand 1 m=100 cmSo, 16m=16×100 cm=1600 cmNow length of hall, l=2400 cmbreadth of hall, b=1600 cmArea of the hall=l×b=2400×1600=3840000 cm2Area of each tile ,s=s2=402=1600 cm2So, number of tiles required=Area of the hallArea of each tile=38400001600=2400
Regards

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