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Rumus luas permukaan tabung = 2 x π x r x ( r + T )
$= 2 times 3.14 times frac{10}{2} times (5 + 12)$
= 3,14 x 10 x 17
= 533,8 Cm²

2. Rumus volume bola = 4/3 x π x r x r x r
$= frac{4}{3} times frac{22}{7} times 14 times 14$ x 14
= 4/3 x 22 x 2 x 14 x 14
= 4/3 x 8.624
= 11.498,66 Cm^3

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Maaf Kalau Salah