Question

a marble tile 10cm×12cm.How many tiles will be required to cover a wall of size 3m×4m

Answer 1

area of tile= l*b
10*12=120cmsq.
area of wall = l*b
300*400=1200
no of tiles =120000\120=1000

Answer 2

area of tile = 10cm×12cm =120cm.
one meter =100cm then 3×100=300cm.4×100= 400cm .
area of wall = 300*400= 120000cm
then required tile are -12000÷120= 100 tiles.