Question

How many rectangular tiles $10cm$by $7cm$will be required to cover a floor $14m$long and $12.5m$ broad and what will be the cost at $₹70$ per hundred tiles?

Answer 1

Step 1:

Area of floor$=length\times breadth$

Length$=$$14m$

Breadth$=12.5m$

Area of floor$=14\times 12.5=175m^2$

Step 2:

Area of tile$=length\times breadth$

$1m=100cm$

Length$=10cm$$=0.1m$

Breadth$=7cm$$=0.07m$

Area of tile$=0.1\times 0.07=0.007m^2$

Step 3:

Number of stones required to cover the floor$=\frac{Areaoffloor}{Areaoftile}$

Number of stones required to cover the floor$=\frac{175}{0.007}=25000$

Rate of flooring$=₹70/100tiles=₹0.7/tile$

Total cost of flooring$=area\times rateofflooring$

Total cost of flooring$=25000\times 0.7=₹17,500$

Hence, $25000$ rectangular tiles will be required cover the floor and total cost of flooring is $₹17,500$.