How many square tiles with 20cm sides will be required to cover a part of the wall that has

How many square tiles with 20cm sides will be required to cover a part of the wall that has the shape of a rectangle with sides of 3m and 2.4m

Let’s find the area of a rectangular wall, which is calculated by multiplying the width by the length of the rectangle:

S = a * b;

S = 3 * 2.4;

S = 7.2 m² – wall area;

One square meter contains one hundred thousand square centimeters, therefore:

S = 7.2 m² = 720,000 cm².

Now let’s find the area of one tile. It has a square shape, the area of a square is equal to the square of its side:

S = a²;

S = 20²;

S = 400 cm² – tile area.

Divide the wall area by the tile area:

720,000 / 400 = 180.

Answer: You need 180 pieces of tiles.