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Step-by-step explanation:
Given that d=14cm and h=20cm
From here calculate CSA, u get
CSA=2pirh
=2 pi 7 20
Also given that 2 cm from top and bottom is cut
CSA for 2cm is (2 pi 7 2) for top
For both it is 2*(2 pi 2 7)
Subtracting 2 pi 7 20 - (4 pi 2 7)
U get the required answer.....
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