Mensurationhard · Past Paper
A room's dimensions are 5m x 4m x 3m. It has one door of 2m x 1m and two windows of 1m x 1m each. Find the area of the walls to be painted.
A54 m²
B50 m²
C48 m²
D46 m²
✓ Correct Answer: B — 50 m²
Area of 4 walls = 2 * 3 * (5 + 4) = 6 * 9 = 54 m². Area of openings = (2*1) + 2*(1*1) = 2 + 2 = 4 m². Net area = 54 - 4 = 50 m².
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