Question

the door of length is 4metre and breadth is 2 metre is the wall the length of wall is 8 metre and the breadth is 6 cm find the cost of whitewashing the wall if the rate of whitewashing the wall is Rupee 20 per square metre​

Answer 1

Correct Question:-

⠀

The door of length is 4 metre and Breadth is 2 metre And The wall the length of wall is 8 metre and the breadth is 6 cm. Find the cost of white washing the wall , if the rate of white washing of the wall is Rupee 20 per square metre

Given:-

• Length of Door = 4 m
• Breadth of Door = 2 m
• Length of Wall = 8 m
• Breadth of Wall = 6 cm
• Money for white washing = ₹20 m²

To Find:-

• Area of Door
• Area of Wall
• Area of Remaing Part
• Cost of White Washing the wall at ₹20 m²

Formula to Be used:-

Area of Rectangle = Length × Breadth

Explanation:-

Here, We have Given Length , Breadth of Door and Length and Breadth of Wall, We will find the area of Door and Wall By Using the formula of Area of Rectangle . Also before finding the Area of Wall , We have to convert 6cm into metres. After all, We have to find the Cost if white washing at ₹20m². Let's Find Out •

Answer:-

(i)

⠀⠀ $\rightarrow$ Length of Door = 4 m

⠀⠀$\rightarrow$ Breadth of Door = 2 m

⠀$\rightarrow$ Area of Rectangle = Length × Breadth

⠀

$\rightarrow$ Area of Rectangle = 4 × 2

⠀⠀⠀⠀$\rightarrow$ = ${\underline {\boxed{\frak{\green{ \: \: 8 m \: \: }}}}}$

$\dag \: \Large \sf{\underline\purple{Area \: of \: Door \: is \: 8m}}$

⠀⠀

(ii)

⠀⠀⠀⠀$\rightarrow$ Length of wall = 8 m

⠀⠀⠀⠀⠀⠀⠀$\rightarrow$ Breadth of Wall = 6m

Here, We have To convert 6cm into M

Let's Do it :)

1 m = 100cm

⠀⠀6cm = $\sf\dfrac{6}{100}$ m = 0.06 m

⠀⠀⠀$\rightarrow$ Area of Wall = Length × Breadth

⠀⠀⠀⠀$\rightarrow$ Area of Wall = 8 × 0.06

⠀⠀⠀⠀⠀$\rightarrow$ ${\underline {\boxed{\frak{\green{ \: \: 0.48m \: \: }}}}}$

$\dag \: \: \Large \sf{\underline\red{Area \: of \: Wall \: is \: 0.48m}}$

Now, We Have Subtract the The both Given Values to find the Remaining part of white Washing.

$\: \: \: \: \: \sf\orange {\: 8m - 0.48m\; }$

⠀⠀⠀⠀$\rightarrow$ ${\underline {\boxed{\frak{\pink{ \: \: 7.52 m \: \: }}}}}$

Now,

⠀⠀⠀$\Rightarrow$ Cost of White Washing = ₹20 per m²

$\Rightarrow$ Then Cost of 7.52 M² is

⠀⠀⠀⠀$\Rightarrow$ 20 × 7.52 =

⠀$\rightarrow$ ${\underline {\boxed{\frak{\pink{ \: \: ₹150.4 \: \: }}}}}$

$\begin{gathered}\dag\; \: \sf\gray{\underline{Cost ~of~Whitewashing ~the~ Wall~ of~ 7.52m ~ is ₹150.4}}\end{gathered}$

$\therefore$ $\frak{\underline{₹150.4~{\sf is~ the~ Required~ Answer}}}$