A wall of room is of dimensions 5m*4m. It has a window of dimensions 1.5m*1m and a door of dimensions 2.25m*1m. Find the area of wall which is to be painted.
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Step-by-step explanation:
Explanation:
Area of 4 walls = 2(l+b)h
=2(10+7) x 5 = 170 sq m
Area of 2 doors and 3 windows = 2(1x3)+(2x1.5)+2(1x1.5) = 12 sq m
area to be planted = 170 -12 = 158 sq m
Cost of painting = Rs. 158 x 3 = Rs. 474
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