Question

how many square tiles having a length of 20cm can be fixed on a floor with length 7 metre and breadth 4 metre​

Answer 1

Answer:

400 is divided by 7 multiple by 4is equal to we tiles

Step-by-step explanation:

Answer 2

Given that,

Side of square = 20 cm

Length of the room = 7 m = 700 cm

Breath of the room = 4 m = 400 cm.

Let's find the area of each square tile =

$side \times side \\ </strong><strong>2</strong><strong>0</strong><strong> </strong><strong>cm</strong><strong> \times </strong><strong>2</strong><strong>0</strong><strong> </strong><strong>cm \\ </strong><strong>4</strong><strong>0</strong><strong>0</strong><strong> \: {cm}^{2}$

Therefore, the area of each tile is 400 sq.cm

Let's find area of Rectangle =

$length \times breadth \\ 700cm \times 400cm \\ 280000 \: {cm}^{2}$

Therefore, area of the room is 280000 sq.cm

$no \: of \: tiles = \frac{area \: of \: room}{area \: of \: each \: tile} \\ no \: of \: tiles \: = \frac{280000 \: {cm}^{2} }{</strong><strong>4</strong><strong>0</strong><strong>0</strong><strong>\: {cm}^{2} } \\ no \: of \: tiles = </strong><strong>7</strong><strong>0</strong><strong>0</strong><strong> </strong><strong>\</strong><strong>:</strong><strong>$

Therefore, approximately 700 tiles can me to think.

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