Question

How many tiles whose length and breadth are 12 cm and 5 cm respectively will be needed to fit in a rectangular region whose length and breadth are respectively 100 cm and 144 cm?

Answer 1

Length of rectangle ( L ) :- 100 cm
Breadth of rectangle ( B ) :- 144 cm

Length of tiles ( l ) :- 12cm
Breadth of tiles ( b ) :- 5cm

Let the tiles required be n

n × 12 × 5 = 100 × 144


$n = \frac{100 \times 144}{12 \times 5}$

n = 20 × 12

n = 240

So the required number of tiles is 240

Answer 2

area of region equals 14400 cm^2 and 1 tile area equals 60cm^2 if we divide total area by 1 tile 14400/60 that is 240 hence answeri is 240 tiles