Question

8. The floor of a lobby which is 18 m long and 12 m broad is
to be paved with square tiles of size 12 cm x 12 cm .
Find the number of tiles required to pave the floor and
the cost of flooring at the rate of 80 per tile
high. It has​

Answer 1

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Given data :

length of the floor = 18 m ,

width of the floor = 12 m and

cost of flooring per tile = Rs. 80

Lets find the areas :

Then, area of the floor

= length × width

= 18 × 12 m²

= 216 m²

and the area of each square tile

= 12 × 12 cm²

= 144 cm²

= ($\large\sf{\frac{144 }{ 10000}}$) m²

Step 3. Finding number of square tiles :

∴ required number of square tiles to pave the floor

$\sf{ : \implies \frac{area \: of \: the \: floor }{ area \: of \: each \: tile}}$

$\tt{: \implies ( \frac{\frac{216}{ 144 }}{ 10000})}$

$\tt{: \implies \frac{ (216 × 10000)} {144}}$

$: \implies \tt 15000$

Now lets find the cost of flooring :

∴ the cost of flooring at the rate of Rs. 80 per tile

= Rs. (15000 × 80)

= Rs. 1200000

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Answer 2

Answer:

Your answer is 1200000.