A bathroom floor having dimension of 2 m long and 1 m wide is to be paved with square tile of side 20 cm . Find the number of tile required?

50

Step-by-step explanation:

Area of bathroom in cm²

= 200 × 100 = 20000 cm²

Each tile covers: 20² = 400 cm²

No. of tiles = 20000/400 = 50

4 puzzles in 3 hours

step-by-step explanation:

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right