a hall is 12 m long ,10 m wide and 5 m high .it walls and the roof are to be whitewashed from inside . find the total area to be whitewashed .also find its cost at the rate of ₹5.40 per sq.m.
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Can you imagine a world without merchants, where we are left to our own devices to acquire goods and services without middlemen? Sounds like a harsh place to be. The sale and trade of goods defines much of the development and history of the world.
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