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luas slumut tabug
Ls = 2 x phi x r x t
= 2 x 3,14 x 6 x 10
= 376,8
luas 2 slimut krucut
Ls = 2 x phi x r x s
= 2 x 3,14 x 6 x 10
= 276,8
luas seluruhnya
Lp = 476,8 + 276,8
= 753,6 cm²