Raj is living in a big room. The dimension of the room is 15.6 m x 19.5 m. He wants to cover the floor with the tiles, each of them measuring 120 cm x 150 cm. Find the exact number of tiles required by Raj to cover the floor.

169

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269

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100

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Solution

The correct option is A 169
First of all, we have to convert all the dimensions into the same unit. ( 1 m = 100 cm )

The number of tiles $\times$ Area of each tile = Area of the entire room.

$\Rightarrow$ Number of tiles = $\frac{15.6 \times 19.5}{1.2 \times 1.5}$ = 169 tiles.

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