Question

a tile measures 10cm by 10 cm.how many such tiles are required to cover a wall of 4m by 2.5 m

Answer 1

4×100×250/10×10=1000tiles

Answer 2

Answer:

The number of tiles required are 10.

Step-by-step explanation:

Given : A tile measures 10 cm by 10 cm. and a wall of 4m by 2.5 m.

To find : How many such tiles are required to cover a wall?

Solution :

Tile measures 10 cm × 10 cm

Area =10 cm × 10 cm = 100 sq.cm

Wall measure 4 m by 2.5 m.

Area of wall=4 × 2.5=10 sq.m

1 m=100 cm

10 sq.m =1000 sq.cm

Number of tiles n is

$n= \frac{\text{Area of wall}}{\text{Area of tile}}$

$n= \frac{1000}{100}$

$n=10$

Therefore,  The number of tiles required are 10.