Question

How many bricks each of 25 cm × 10 cm will be required for paving a floor of a room 40m × 30 m

Answer 1

Answer:

Total 480 bricks

Step-by-step explanation:

area of the the brick=25×10

=250sq.cm

area of the room=40×30

=1200sq.m

convert the metre into centimetres

1200sq.m×100=120000sq.cm

to find the no. of bricks needed

120000÷250

=480

ans. 480 bricks needed.