Question

The dimensions of a room are 14m*10m*6.5m.There are two doors and four windows in the room.Each measures 1.5m*1m.Find the cost of painting the four walls of the room at Rs 35 per m2

Answer 1

${\underline{\underline{Answer~:-}}}$

Room is cuboid and we have to paint only four walls than we have to find lateral surfaces.

$\\ = 2h(l + b) \\ = 2 \times6.5(14 + 10) \\ \\ = 312 {m}^{2}$

Here obvesly doors and windows are in this four walls and they are 6.

$= 6(1.5 \times 1) \\ \\ = 9 {m}^{2}$

area for paint :

$= 312 - 9 \\ \\ = 303 {m}^{2}$

For 1m^2 35₹

For 303m^2 = (?)

$= 303 \times 35 \\ \\ = 10605$

Find the cost of painting is 10605₹.

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