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Jawab:
Keliling = jumlahkan semua sisi
= 18 + 18 + 18+ 5 + 8 +8 + 8 + 5
= 88 cm
Luas bangun = L₁ - L₂
= (18 × 18) - (8 × 8)
= 324 - 64
= 260 cm²
cmiiw. maaf kalo salah.
Jawaban:
keliling bangun 1 = s×s×s
= 5×5×5
=125
luas bangun 1 = 6×s×s
= 6×5×5
=150 cm
keliling bangun 2= s×s×s
=8×8×8
=512
luas bangun 2 =6×s×s
=6×8×8
=384cm
bangun 3= p×l
=5×18
=90cm
125+150+512+384
=1171cm
maaf kalo salah
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