Question
A composite wall consists of a rectangle 12 m by 9 m with a triangular window of base 4 m and height 3 m cut out. If the wall needs to be painted at Rs. 120 per sq m, find the painting cost after deducting the window area.
This question was previously asked in
SSC CGL 2025 Tier 1 Question Paper (25-Sep-2025) (Shift 3)
The correct answer is
Rs. 12,240
Wall area = 12 x 9 = 108 sq m. Window area = half x 4 x 3 = 6 sq m. Paintable area = 108 - 6 = 102 sq m. Cost = 102 x 120 = Rs. 12,240.
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