An aeroplane is 30m long and its model is 15cm long. If the total outer surface area of the model is 150cm², find the cost of painting the outer surface of the aeroplane at the rate of Rs.120 per sq. m. Given that 50sq. m. of the surface of the aeroplane is left for windows.
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The Cost of painting the outer surface of the aeroplane is 30000 rupees.
Dipankar1234:
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