Jawab:
keliling = jumlah semua sisi
= 15 + 28 + 24 + 9 + 21 + 11 + 12 + ( 28-(9+11))
= 15 + 28 + 24 + 9 + 21 + 11 + 12 + ( 28 - 20)
= 15 + 28 + 24 + 9 + 21 + 11 + 12 + 8
= 128 cm
Penjelasan dengan langkah-langkah:
semoga membantu
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Jawab:
keliling = jumlah semua sisi
= 15 + 28 + 24 + 9 + 21 + 11 + 12 + ( 28-(9+11))
= 15 + 28 + 24 + 9 + 21 + 11 + 12 + ( 28 - 20)
= 15 + 28 + 24 + 9 + 21 + 11 + 12 + 8
= 128 cm
Penjelasan dengan langkah-langkah:
semoga membantu