= 10 cm
= 2 x π x r x (r + t)
= 2 x 3,14 x 10 x (10 + 25)
= 62,8 x 35
= 2.198 cm²
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Tabung
= 10 cm
luas permukaan
= 2 x π x r x (r + t)
= 2 x 3,14 x 10 x (10 + 25)
= 62,8 x 35
= 2.198 cm²
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