A wall of 12 m $$\times$$ 8 m has a door of 3 m $$\times$$ 1.5 m and two windows each of 1.5 m $$\times$$ 1.5 m. Find the area of wall that can be painted(free from doors and windows).
Area of the wall=96 sq cm
Area of door=3*1.5=4.5 sq cm
Area of two windows=2*1.5*1.5
=4.5 cm
Therefore required area=96-(4.5+4.5)
=96-9
=87 sq cm
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