Question

The cross-section of a tunnel perpendicular to its length is a trapezium ABCD as shown in the figure. AM=BN: AB=4.4 m; CD=3m. The height of the tunnel is 2.4 m. The tunnel is 50 m long.
Calculate the cost of painting the internal surface of the tunnel (excluding the floor) at the rate of ₹5 per m².
the cost of paving the floor at the rate of ₹18 per m².​

Answer 1

Answer:

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