Question

A rectanglular floor with length and breadth 20m and 15m respectively

needs to be covered with square tiles of length 20cm. How many such tiles

are required to cover the rectangular floor?​

Answer 1

Answer:

Area of rectangle= 20× 15 m ²= 300m²

Area of tiles= 20× 20cm²= 400cm²= 4m²

So, we need 300/4 tiles= 75tiles

Answer 2

Answer:

7500

Step-by-step explanation:

Number of tiles required to cover the floor = Area of floor / Area of one tile

Area of rectangle = Length * Breadth

Area of square = Side * Side

Area of floor (Rectangle) = 20 metres * 15 metres = 300 metres²

Area of one tile (square) = 20 centimetres * 20 centimetres

= 0.2 metres * 0.2 metres

= 0.04 metres²

So total number of tiles required = 300 / 0.04

= 30000 / 4

= 7500