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Kelas 8 MatematikaBab Bangun Ruang
Luas permukaan
= 2 . π . r . (r + t)
= 2 . 3,14 . 10 . (10 + 15)
= 62,8 . 25
= 1.570 cm²
jawabannya 1.570
Maaf kalau salah