4. A rectangular hall is 12 m long and 6 m broad. Its looring is to be

1.	4. A rectangular hall is 12 m long and 6 m broad. Its looring is to be made of squarstiles of side 30 cm. How many tiles will it in the entire hall? How many would brequired if tiles of side 15 cm were used?
Answer» l=12m=12×100cm=1200cm. (1m=100cm) b=6m=6×100cm=600cm Area of room=l×b 1200×600=720000cm²a=30cm Area of square tile=a×a30×30 = 900cm² Tiles required=area of room/area of tiles720000/900=800 tiles In case of 15 cm tilesa=15 cmarea of tile=15×15=225 cm² Required tiles= area of room/area of tile720000/225= 3200 tiles required thanks

4. A rectangular hall is 12 m long and 6 m broad. Its looring is to be made of squarstiles of side 30 cm. How many tiles will it in the entire hall? How many would brequired if tiles of side 15 cm were used?

Answer»

l=12m=12×100cm=1200cm. (1m=100cm)

b=6m=6×100cm=600cm

Area of room=l×b

1200×600=720000cm²a=30cm

Area of square tile=a×a30×30 = 900cm²

Tiles required=area of room/area of tiles720000/900=800 tiles

In case of 15 cm tilesa=15 cmarea of tile=15×15=225 cm²

Required tiles= area of room/area of tile720000/225= 3200 tiles required

thanks