Question

15. How many tiles measures 25cmx20cm required to cover a wall of size 4mx3m ? *​

Answer 1

Using formula ( length into breadth ) Area of rectangle

then

25cm multiply 20cm we get 500cm^2

and

400cm multiply 300cm we get 120000cm^2

then divide 120000cm^2 by 500cm^2

we get 240 tiles