A laboratory is 9 m long 8 m broad and 6 m high it has 2 doors each of size 3m×1.5m and fiur windows each of size 1.5m×1m find the cost of white washing the walls of the laboratory at the rate of rupees 1.75 per square m
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Answer:₹393.75
Step-by-step explanation:
Area of fourwalls=2(l+b)h
=2(9+8)6
=204m²
Area to be whitewashed= Area of 4 walls-area of 2 doors-area of 4 windows
204-2(3×1.5)-4(1.5×1)
=225m²
Cost of whitewashing 1m²=1.75
Cost of whitewashing 225m²=1.75×225
=393.75₹
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