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1. A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:
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By: guest on 01 Jun 2017 05.49 pm
Let the thickness of the bottom be x cm. Then, [(330 - 10) x (260 - 10) x (110 - x)] = 8000 x 1000 320 x 250 x (110 - x) = 8000 x 1000 (110 - x) = 8000 x 1000 = 100 320 x 250 x = 10 cm = 1 dm.