D. 36 cm
K = s + s + s
K = 26 + 26 + s
88 = 52 + s
s = 88 - 52
s = 36 cm
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Jawaban:
D. 36 cm
PEMBAHASAN:
K = s + s + s
K = 26 + 26 + s
88 = 52 + s
s = 88 - 52
s = 36 cm