Question

A marble tile measure 25cm by 20cm. How many tiles will be required to covered a wall of size 4 m by 3m

Answer 1

length of wall = 4m = 400 cm
breadth of wall = 3m = 300cm
Area of wall = length × breadth
= 400×300
= 120000cm^2
Area of tile = 25×20= 500cm^2
number of tiles required
= area of wall / area of tile
=120000/500 = 240 tiles

Answer 2

Answer:

Step-by-step explanation:

using formula ( length into breadth ) Area of rectangle

then

25cm multiply 20cm we get 500cm^2

and

400cmm multiply 300cm we get 120000cm^2

because 1m = 100 cm

then divide 120000cm^2 by 500cm^2

we get 240 tiles