Question

The floor of a room is of dimension 9m *12 m. Square tiles of side 12cm have to be arranged on the floor . How many tiles are required to cover the floor.

Answer 1

Area of floor = Area of rectangle

= ( 12 × 9 ) m²
= 108 m²
= 1,080,000 cm²

Area of 1 tile = Area of square

= ( 12 )² cm²
= 144 cm²

∴ No. of tiles

= Area of floor / Area of 1 tile
= 1,080,000 cm² / 144 cm²
= 1,080,000 / 144
= 7,500

Hence, 7500 tiles are required to cover the floor.

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Answer 2

Step-by-step explanation:

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