Answer:
₹342
Step-by-step explanation:
The door's area occupies some of the wall's area, meaning that the total area of the wall that needs to be painted is the difference of area between the wall with its dimensions and the door and its dimensions or,
(12 x 5) - (2 x 1.5) = 60 - 3 = 57 square meters.
(Since the wall and door are both rectangles their areas follow the area of a rectangle).
Since the cost for paint is 6 rupees per square meters and we have 57 of those, the total cost is 57 times 6 or 342 rupees.
