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Verified answer
Luas alas + luas selimutPi xr^2 +2pixrxt
3.14 x100 + 2x 3.14 x10xt
314+62.8t = 3454
62.8t = 3454-314
62.8t = 3140
t = 3140/62.8=50
Volume tabung = luas alas x t
314x50= 15700