Question

A room is $\text{5 m 40 cm}$ long and $\text{3 m 20 cm}$wide. kareena wants to pave the floor with tiles. In the market $\text{3}$different size tiles of the same brand quality are available:

1. $\text{10 cm × 10 cm at 1 rupee}$ per tile Find the how many tiles of each type are needed ?

Answer 1

Length of hall $\text{= 5 m 40 cm = 540 cm}$ and

Width of hall $\text{= 3 m 40 cm = 320 cm}$

Area of room $\text{= length × width}$

$\text{= 540 × 320}$

${\text{= 172800 cm}}^2$

Area of tiles $\text{= 10 × 10}$

${\text{= 100 cm}}^2$

Thus required number of tiles $\text{=}\frac{\text{area of room}}{\text{area of tile}}$

$\text{=}\frac{\text{172800}}{\text{100}}$

$=1728$tiles

Hence the $\text{10 cm × 10 cm at 1 rupee per tile is 1728 tiles}$.