Question

how many bricks of 10 cm long 7cm wide are needed to pave a rectangular floor 14m long and 12.5m wide?​

Answer 1

Answer:

firstly convert meter into centimeters

that is 10m=1000cm

and 8m=800cm.

area of floor 800X1000=800000cm

length of brick 20cm breadth of brick 10cm

now area of brick will be 20X10=200cm

800000÷200(ar of floor / ar of brick)

you can also convert it into meters by dividing by 100

800000÷100=8000

200÷100=2

here 8000÷ 2

4000

you need 4000 bricks.

Answer 2

Answer:

25,000

Step-by-step explanation:

area of breaks = L×B

= 10×7

=70

Area of floor=l×b

= 1400×1250

= 1750000 cm

Number of bricks need to pave the floor = 1750000/70. =25000 cm

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