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2200 = 2 x 22/7 x r x 25
2200 = 1100/7 x r
r = 14 cm
Luas permukaan = 2πr(r + t)
= 2 x 22/7 x 14 (14 + 25)
= 88 x 39
= 3432 cm²
Jawaban: A