Question

How many tiles whose length and breadth are $12cmand5cm$ respectively will be needed to fit in a rectangular region whose length and breadth are $70cmand36cm$ respectively?

Answer 1

Find the number of tiles:

Area of tile $=12\times 5$

$=60c{m}^{2^{}}$

Area of rectangular region $=70\times 36$

$=2520c{m}^{2^{}}$

Number of tiles needed $=\frac{\mathrm{Area}\mathrm{of}\mathrm{rectangular}\mathrm{region}}{\mathrm{Area}\mathrm{of}\mathrm{tile}}$

$=\frac{2520}{60}$

$=42$

Therefore, the number of tiles needed are $42$.