How many square tiles of side 20 cm will be needed to pave a foot path

1.	How many square tiles of side 20 cm will be needed to pave a foot path which is 2 metreswide and surrounds a rectangular plot 40 m long and 22 m wide?
Answer» For rectangular floor,Length = 6m = 6 x 100 cm = 600 cmBreadth = 4m = 4 x 100cm = 400cmSo area of the floor = l x b= 600cm x 400 cm = 240000 Now, side of one square tile = 20cmSo area occupied by one square tile = 20cm x 20cm = 400 Thus, Number of square tiles = Area of floor/Area of 1 tile= 240000/400= 600 tiles

How many square tiles of side 20 cm will be needed to pave a foot path which is 2 metreswide and surrounds a rectangular plot 40 m long and 22 m wide?

Answer»

For rectangular floor,Length = 6m = 6 x 100 cm = 600 cmBreadth = 4m = 4 x 100cm = 400cmSo area of the floor = l x b= 600cm x 400 cm = 240000

Now, side of one square tile = 20cmSo area occupied by one square tile = 20cm x 20cm = 400

Thus, Number of square tiles = Area of floor/Area of 1 tile= 240000/400= 600 tiles