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= 2 x 22/7 x 7 x 14
= 2 x 22 x 14
= 44 x 14
= 616 cm²
LPT = 2 π r (r + t)
= 2 x 22/7 x 7 x (7 + 14)
= 2 x 22 x 21
= 44 x 21
= 924 cm²
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