Mathematics · Mensuration
The perimeter of a triangular surface is 144 cm and its sides are in the ratio 3 : 4 : 5. Find the cost of painting the surface at the rate of Rs. 5 per cm 2 .
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Rs. 3850
- 2Rs. 3980
- 3Rs. 4320✓
- 4Rs. 4200
Correct answer
Rs. 4320
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