Question

Abhinav wants to cover the floor of a room with tiles of size 10 cm x 10 cm.
Find the total number of tiles required if the size of the room is 5 mx 3 m.
Find the cost of tiling the floor at the rate of rupees 85 per hundred tiles.​

Answer 1

Step-by-step explanation:

No. of tiles= Area of floor/Area of tile (IN SAME UNIT)

=500cm×300cm/10cm×10cm

=1500 tiles

Cost of 100 tiles=85

So, cost of 1500 tiles=15×85=1275 rupees

Answer 2

$\tt ฏGIVEN:−$

$\tt length \: of \: floor = 4m =400cm$

$\tt breadth\: of \: floor= 3m = 300cm$

$\tt length\: of \: single \: tile= 8cm$

$\tt breadth\: of \: single \: tile= 6cm$

$\tt ฏFIND:-$

$\tt no. \: of \: tiles \: reqire = ?$

$\tt ฏSOLUTION:-$

$\tt area \: of \: floor = 400 \times 30 \\ \tt = 120000 {cm}^{2}$

$\tt area \: of \: each \: tile= 8 \times 6 = 4 {cm}^{2}$

$\tt now \: let \: no. \: of \: tiles = x$

$\tt = > area \: of \:hall= x\times area \: of \: each$

$\tt = > 120000 = x(48)$

$\tt = > x = \frac{ \cancel{ 120000}}{ \cancel{48}} = 2500$

$\boxed{ \tt so \: total \: no. \: of \: tile \: is \boxed{2500}}$