Question

A tile is a square of side 20 CM. How many such tiles would be required to cover the floor of a square bathroom of side 3m.​

Answer 1

Step-by-step explanation:

side of a square tile = 20 cm

side of the square bathroom = 3 m = 300 cm

area of a square tile = 20 × 20

= 400 cm^2

area of the square bathroom = 300 × 300

= 90000 cm^2

now, numbers of square tiles required = area of square bathroom / area of a square tile

= 90000/400

= 900/4

= 225

therefore 225 square tiles are required to cover the square bathroom

Answer 2

Answer: 225

Hope the explanation helps :)

Step-by-step explanation:

Given side of a square tile = 20cm

Side of a square floor = 3m = 300cm

No.of tiles required to cover the floor = Area of the floor/Area of one tile

Area of floor = 300 × 300 cm²

                    = 90000 cm²

Area of one tile = 20 × 20 cm²

                        = 400 cm²

No.of tiles required to cover the floor = 90000cm²/400cm²

= 225

∴No.of tiles required to cover the floor = 225