Question

A door of length 2 m and breadth 1m is fitted in a wall. The length of the wall is 4.5 m and the breadth is 3.6 m (Fig11.6). Find the cost of white washing the wall, if the rate of white washing the wall is ₹ 20 per m2

Answer 1

Answer:

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Answer 2

Answer:

$Rs 284$

Step-by-step explanation:

given, length of door = $2m$

          breadth of door = $1m$

therefore area of door is = $2\times 1$

                                         = $2m^{2}$

also given,length of the wall =$4.5m$

                 breadth of the wall =$3.6m$

therefore area of wall is = $4.5\times 3.6$

                                        = $16.2m^{2}$

now total area for white washing = $\left (16.2-2 \right )m^{2}$

                                                       = $14.2m^{2}$

as it is given the rate of white washing the wall is Rs 20 per $m^{2}$

therefore total cost of white washing = $14.2m^{2}\times 20$

                                                              = Rs 284