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Jawaban:
B. 10 maaf kalau salah ya
Jawab:
B.5
Penjelasan dengan langkah-langkah:
Keliling Segitiga Sama Kaki = Panjang Alas + ( 2 × Panjang Kaki )
40 = Alas + ( 2 × 5 )
= Alas + 10
= 30 + 10
Alas = 40 - 10
= 30 Cm
Kaki = 5 Cm