A door of length $2 m$ and breadth $1 m$ is fitted in a wall. The length of the wall is $4.5 m$ and breadth is $3.6$ . Find the cost of white washing the wall, if the rate of white washing the wall is $R s 20$ per $m^{2}$ .

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Solution

Area for white wasing
= Area of whole wall - Area of door

$= 4.5 \times 3.6 - 2 \times 1$

$= 16.2 - 2 = 14.2 m^{2}$

$\Rightarrow C o s t = 14.2 \times 20$

$= 284 R s .$

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A door of length 2 m and breadth 1 m is fitted in a wall. The length of the wall is 4.5 m and the breadth is 3.6 m (see the given figure). Find the cost of white washing the wall, if the rate of white washing the wall is Rs 20 per m².

A door of length $2 m$ and breadth $1 m$ is fitted in a wall. The length of the wall is $4.5 m$ and the breadth is $3.6 m$ . Find the cost of the white washing the wall, if the rate white washing the wall is $R s . 20$ per $m^{2}$ .

A door of length $2 m$ and breadth $1 m$ is fitted in a wall. The length of the wall is $4.5 m$ and the breadth is $3.6 m$ . Find the cost of white washing the wall is $R s . 20$ per $m^{2}$ .

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A door of length 2m and breadth 1m is fitted in a wall. The length of the wall is 4.5m and breadth is 3.6. Find the cost of white washing the wall, if the rate of white washing the wall is Rs20 per m2.

Area for white wasing= Area of whole wall - Area of door=4.5×3.6−2×1=16.2−2=14.2m2⇒Cost=14.2×20=284Rs.

A door of length $2 m$ and breadth $1 m$ is fitted in a wall. The length of the wall is $4.5 m$ and breadth is $3.6$ . Find the cost of white washing the wall, if the rate of white washing the wall is $R s 20$ per $m^{2}$ .

Area for white wasing
= Area of whole wall - Area of door

$= 4.5 \times 3.6 - 2 \times 1$

$= 16.2 - 2 = 14.2 m^{2}$

$\Rightarrow C o s t = 14.2 \times 20$

$= 284 R s .$