Question

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Answer 1

Volume of cylindrical tank = 3080 cm³

Height = 20 cm

AtQ

Volume of cylindrical tank = pei ×r²×h

3080= 22/7×r²×20

3080×7/22×20= r²

49=r²

7cm=r

So , diameter = 2r= 7×2 = 14 cm

LSA of cylindrical tank = 2×pei×r×h

= 2×22/7×7×20

=880cm²

Answer 2

Answer:

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