animal solved question number 10
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lakshya2957:
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i am in class 9 icse can you tell yours class information
intermediate 1st year
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the cross section of a tunnel perpendicular to its length is a trepeziumPQRSas shown in the figure; also given PM = QM, PQ = 7 cm, RS= 5m, the height of the tunnel is 2.4 m.The tunnel is 40m long, find (i) the cost of painting the internal surface of the tunnel (excluding the floor ) @ Rs5 per m2 (ii) the cost of paving the floor @ Rs18 per m2.
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