Jawaban:
4.
5.
2(2a + 3) + a = 61
4a + 6 + a = 61
5a = 55
a = 11
PQ = QR
= 2a + 3
= 2(11) + 3
= 25cm
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Jawaban:
4.
5.
2(2a + 3) + a = 61
4a + 6 + a = 61
5a = 55
a = 11
PQ = QR
= 2a + 3
= 2(11) + 3
= 25cm