B. 150π cm2
=2 x π x r (r + t)
=2 x π x 5 (5 + 10)
=10.π.15
=150πB
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Jawaban :
B. 150π cm2
Penjelasan dengan langkah-langkah :
=2 x π x r (r + t)
=2 x π x 5 (5 + 10)
=10.π.15
=150πB
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