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OS = 6 , QS = d1 = 2.6 = 12
luas = 1/2 d1 . d2 = 96
1/2 . 12 d2 = 96
6d2 = 96
d2 = 96/6
d2 = 16
sehingga PR = 16 cm
: PQRS =96cm2
ditanya : PR ... ??
jawab : L = 1/2 . d1 . d2
96 = 1/2 . 6 . d2
d2 = 96/6 . 2
d2 = 16. 2
d2= 32
jadi panjang pr = 32 cm
smoga mmbantu