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Question

There is a water tank in the form of a rectangular

parallelepiped of height 1.1 m and a square base of side 2 m. If a full tank of water is drained out completely in a long pipe of circular cross-sectional area of radius 1 cm, what should be the minimum length of the pipe, in km, to hold the entire water in it? (Тakе л= 22/7)

A 12

B 13

C 14

D 15

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