una wants to cover floor of a room whichis 3 m wide and 4 m long by sq

1.	una wants to cover floor of a room whichis 3 m wide and 4 m long by square tileseach square tile is of side 20 cm, find thenumber of tiles required to cover the floorof the room.1013. Ar. If
Answer» Area of floor Af = lengthbreadth = 4x3 = 12 m^2 = 120000 cm^2 Area of each tile At = sideside = 2020 = 400 cm^2 Let no. of tiles required to cover floor = n Then, nAt = Afn = 120000/400 = 300 300 tiles required to cover floor

una wants to cover floor of a room whichis 3 m wide and 4 m long by square tileseach square tile is of side 20 cm, find thenumber of tiles required to cover the floorof the room.1013. Ar. If

Answer»

Area of floor Af = length*breadth = 4x3 = 12 m^2 = 120000 cm^2

Area of each tile At = side*side = 20*20 = 400 cm^2

Let no. of tiles required to cover floor = n

Then, n*At = Afn = 120000/400 = 300

300 tiles required to cover floor