find the cost of painting the four walls of a room 10 M long 5 M broad and 6 M size at cost of Rs 4 per square metre
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L= 10m B=5m h=6m.
Area of four wall =2(L+b)×h
2(10+5)×6=180m²
Cost of painting =180×4=€720m².
Area of four wall =2(L+b)×h
2(10+5)×6=180m²
Cost of painting =180×4=€720m².
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