Question

Length of the dining hall is 15 m and breadth is 12 m. Square tiles are to be fixed of length 30 cm in the floor of the hall, then how many tiles are needed?

Answer 1

The length of the dining hall is 15 m and breadth 12 m.

We know, area = ( length X breadth) (unit${)}^2$

$\therefore area=(15\times 12)m^2=180m^2$

Now, the length of a square tile is 30 cm.

We have $30cm.=\frac{30}{100}=0.3m$

We know for a square, area = (side${)}^2$

$\therefore area=(0.3{)}^2{m}^2=0.09m^2$

$\therefore$ Tiles needed $=\frac{180}{0.09}=2000pieces$