Question

how many tiles with length 13cm and breadth 7cm are needed to cover a rectangular region whose length and breadth are 5.2m and 1.4 m respectively?​

Answer 1

Area of the reactangle = l *b

$= > {5.2 \times 1.4}m {}^{2}$

$= > 7.28 {m}^{2}$

$72800 {cm}^{2}$

Now area of each tile =(13 * 7)cm^2

$= > 91 {cm}^{2}$

$number \: of \: tiles = \binom{72800}{91}$

Number of of tiles = 800.