Question

how many tiles whose length and breadth are 13 cm and 7 cm respectively are needed to cover a rectangular region whose length and breadth are 520 cm and 140 cm

Answer 1

Area of tile => L=13cm B=7 A=l*b 13*7 =91cm^2 Area of plot => L=520vm B=140cm A=l*b 520*140 = 72800cm^2 No of tiles to fit = area if plot /area of tile 72800/91 =800

Answer 2

$\huge\bold\green{Question}$

How many tiles whose length and breadth are 13 cm and 7 cm respectively are needed to cover a rectangular reason whose length and breadth are 520 cm and 140 CM

$\huge\bold\green{Answer}$

According to the question we have :-

→ Length of tile = 13cm

→ Breadth of tile = 7 cm

→ Rectangular Region = 520 × 140

Simply , by using formula of area of rec. we can find it ,

$\tt\green{Area\:of\: rectangle=length\times breadth}$

Now, according to the question by substituting the known values in formula we get :-

→ Length of tile = 13cm

→ Breadth of tile = 7 cm

$\begin{lgathered}\tt = Area\:of\:tiles=13\times 7\\ \\ \tt\green = Area=91cm\end{lgathered}$

Hence , the Area of region is :-

$\begin{lgathered}\tt = Area\:of\:plot=530\times 140\\ \\ \tt\green= Area\:of\:plot=72800cm{}^{2}\end{lgathered}$

$\sf\orange{\:\: Required\:Tiles=\dfrac{Area\:of\:plot}{Area\:of\:tiles}}$

$\begin{lgathered}\tt = No.\:of\: tiles=\cancel{\dfrac{72800}{91}}\\ \\ \tt\green = No. \:of \: Tiles\: =800\end{lgathered}$

Hence , the required tiles is 800