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sisi persegi anggap x
x^2 + x^2 = V72^2
2x^2 = 72
x^2 = 36
x = 6
no 22)
luas daerah yg tdk diarsir
= 48 + 40 - (2x9)
= 88 - 18
= 70
jawaban B
no 23)
luas jalan = (25x14) - (23x12)
= 350 - 276
= 74
jawaban C