Question

Q.5. A rectangle room is 40m long and 15 m broad, it is to be paved with tiles, each measuring 6 dm by 1 dm. Find the number of tiles required. Also, find the cost of tiling
a rectangular room at the rate of 25 per hundred square metre.​

Answer 1

Answer:

2000

Step-by-step explanation:

since:

l =40m

b=15 m

area of room[rectangle]=l*b

                                            =40m*15m

                                            =600m.sq

and tiles each measuring 6dm by5dm

by converting it into meter we get,

   0.6m by  0.5m

now, area of tile= l*b

                             =0.6m*0.5m

                             =0.3m.sq

now, number of tiles required =area of room/area of tile

                                                 =600m.sq/0.3m.sq

                                                 =600*10/3

                                                 =6000/3

                                                  =2000.

Answer 2

Answer:

area of floor = 15*40 = 600m² = 60000dm²

area of tile = 6dm²

no. of tiles = 60000/6 = 10000 tiles

cost of tilling = 25*600/100 = ₹15000/100 = ₹150