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Verified answer
Jawabukuran sisi segitiga siku siku memenuhi deret aritmetika
a= 3x
b = 4x
c= 5x
Luas = 1/2 ab = 1/2 (3x)(4x) = 486
6x² = 486
x² = 81
x = 9
keliling = 3x+ 4x + 5x = 12x = 12(9)= 108