Question

How many square tiles of side 9 cm will be needed to fit in a square floor of a bathroom of side
72 cm?

Answer 1

Dear Student,

$$\begin{gathered} Sideofsquarebathroom=72cm \\ \therefore Areaofsquarebathroom=72cm\times 72cm \\ Sideofsquaretile=9cm \\ \therefore Areaofsquaretile=9cm\times 9cm \\ Thus,numberoftilesrequired=\frac{Areaofbathroom}{Areaofsquare}=\frac{72\times 72}{9\times 9}=64tiles \end{gathered}$$