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2 (pl + pt + lt ) + 1/2(phir^2 + 2phirt)
2 (25 x 14 + 25 x 10 + 14 x 10) + 1/2 ( 2 x 22/7 x 7 x 7 + 2 x 22/7 x 7 x 25)
2 (740) + 1/2 ( 308 + 1100)
1480 + 704
= 2184 cm^2 ( D )