Question

a marble tile measure s 20 cm by 15 cm how many tiles will be required to cover a wall of size 5m by 3m ?

Answer 1

length of tile= 20 cm
breadth of height= 15 cm

Therefore, the area of the tile= length × breadth

= 20 × 15 cm²
= 300 cm²

Now, length of the wall= 5 m
breadth of the wall= 3 m

Therefore, area of the wall= length × breadth
= 5 × 3 m²
= 15 m²

Since 1 m= 100 cm
1 m²= 100 × 100= 10000 cm²

Therefore, area of wall in cm= 15 × 10000 cm²
= 150000 cm²

Now, number of tiles= area of wall ÷ area of tiles
= 150000÷300
= 500

Answer= 500 tiles

Answer 2

Area of tile = 20 × 15

300cm²

Area of wall = (500×300)

150000cm²

Number of tiles required= Area of wall÷Area of 1 tile

150000÷300

= 500 tiles