Question

the dimension of all are 20 metre multiply 12 metre how many square shaped tiles with 4 metre child will be required to cover the floor

Answer 1

No of tiles
=Area of hall/area of each square tile
=lb / a^2
=20×12/4×4
=15

15 tiles are required to cover the floor.

Answer 2

$here \: length \: of \: hall = 20 \: metres \: and \: breadth \: of \: hall = 12metres \\ therefore \\ area \: of \: hall = 20 \times 12 = 240 \: m ^{2} \\ now \: area \: of \: 1 \: tile = 4^{2} = 16m^{2} \\ so \: the \: required \: number \: of \: tiles = area \: of \: hall \div area \: of \: 1 \: tile \\ hence \: the \: required \: number \: of \: tiles = 15 \\ \\ hence \: 15 \: tiles \: are \: required \: to \: cover \: the \: floor \: of \: the \: hall.$

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