Question

o find the cost of painting a wall with dimension
15m by 6m at the rate of Rs lzoper square mete​

Answer 1

Correct Question :-

• Find the cost of painting a wall with dimension 15 m by 6 m at the rate of Rs.120 per m².

Answer :-

• Total Cost of painting the Wall = 10800 Rs

Given :-

• Length of the Wall = 15 m
• Width of the Wall = 15 m

To Find :-

• Total Cost of painting the Wall = ?

Explanation :-

As per above given, we have length & Width of the wall. It means the wall is in a Rectangular Form.

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$\blue { \boxed { \bf \bigstar \: Area \: of \: Rectangle = Length \times Width \: \bigstar }}$

Now Substituting the values,

$\rm : \: \longrightarrow Length \times Width = Area \: of \: Rectangle$

$\rm : \: \longrightarrow 15 \times 6 \: m^2$

$\green { \bf : \: \longrightarrow 90 \: m^2 }$

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Now, we will find the total cost of painting the wall

$\rm \hookrightarrow Cost \: of \: Painting \: 1 \: m^2 = \bold{120 \: R_S}$

$\rm \hookrightarrow Cost \: of \: Painting \: 90 \: m^2,$

            $\rm = (90 \times 120) \: R_S$

           $\red { \underline { \boxed { \bf = 10800 \: R_S }}}$

Hence, the Cost of painting the wall is 10800 Rs.

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$\underline { \underline { \bf \huge \text More \: \large \text To \: \large \text Know }}$

$\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\multiput(0,0)(5,0){2}{\line(0,1){3}}\multiput(0,0)(0,3){2}{\line(1,0){5}}\put(0.03,0.02){\framebox(0.25,0.25)}\put(0.03,2.75){\framebox(0.25,0.25)}\put(4.74,2.75){\framebox(0.25,0.25)}\put(4.74,0.02){\framebox(0.25,0.25)}\multiput(2.1,-0.7)(0,4.2){2}{\sf\large Length}\multiput(-1.4,1.4)(6.8,0){2}{\sf\large Width}\put(-0.5,-0.4){\bf A}\put(-0.5,3.2){\bf D}\put(5.3,-0.4){\bf B}\put(5.3,3.2){\bf C}\end{picture}$

Formulas Related to the Rectangle,

$\rm \odot \: Area \: of \: Rectangle = Length \times Width$

$\rm \odot \: Perimeter \: of \: Rectangle = 2(Length + Width)$

$\rm \odot \: Diagonal \: of \: Rectangle = \sqrt{(Length)^{2}+(Width)^{2}}$