A hall measure 6m long, 4m wide and 2 m height. Find the cost of
painting the walls and ceiling at Rs. 30 per m"
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Step-by-step explanation:
dimensions of hall are :-
l = 6m
b = 4m
h = 2m
Surface Area Of cuboid = 2×(lb+lh)+hb
= 2 × (24m² + 12m²) + 8m²
= 2 × 36m² + 8m²
= 72m² + 8m²
= 80m²
cost of 1m² = Rs 30
cost of 80m² = Rs 30 × 80
= Rs 2400
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