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Izinkan saya mencoba menjawab,No.29 :
Simetri lipat --> membagi 2 bag sama besar. Maka garis simetri lipat adalah B. p dan r
No.30 :
Keliling bangun
= 8 + 4 + (8 - 4) + 5 + 3 + 4
= 12 + 4 + 12
= 28 cm (C)