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(d1 × d2) / 2 = 135
(18 × d2) / 2 = 135
9 × d2 = 135
d2 = 135 / 9
d2 = 15 cm
semoga membantu
Kelas : 6 SD
Materi : Bangun datar
Jawab :
L. layang layang = 1/2 × d1 × d2
135 = 1/2 × 18 × d2
135 = 9 × d2
d2 = 135 / 9
d2 = 15 cm
Jadi, P. diagonal yang lainnya adalah 15 cm