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x² = 17² - 15²
= 289 - 225
= 64
x = √64
= 8 cm
kell bangun = 27 + 17 + (27 - 8) + 5 + 5 + 15
= 27 + 17 + 19 + 5 + 5 + 15
= 44 + 44
= 88 cm ..... jawaban : A