Question

how many rectangular tiles 10cm by 7cm will be required to cover a floor 14m by 12 1/4m and what will be cost at Rs. 5 per hundred tiles

Answer 1

hey friend...!!!
your answer ➡

Area of rectangular tiles =10×7=70cm =0.7 m


Area of the floor
$= 14 \times 12\frac{1}{4} \\ \\ = 14 \times \frac{49}{4} \\ \\ = 98 \: {m}^{2}$


no. of the tiles to cover the floor
$= \frac{area \: of \: floor}{area \: of \: tiles} \\ \\ = \frac{98}{0.7} \\ \\ = 140 \: tiles$


hence 140 tiles is needed to cover the floor



cost of the tiles
according to 5 rupees per hundred tiles

$= 140 \times \frac{5}{100} \\ \\ = 7$






hope it will be helpful