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

Given,

Length of rectangular floor = 20 m

Breadth of rectangular floor = 15 m

Length of side of square tiles = 20 cm

= 0.2 m

Answer ,

Area of the room = 20 m × 15 m

(since, area of rectangle = l × b)

= 300m²

Area of 1 tile = 0.2 m × 0.2 m

(since area of square = side²)

= 0.04m²

No. of tiles required

= 0.04 × 300

= 12

Hence, 12 tiles are required