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(2) sdt a=sdt j, sdt b=sdt k, sdt c=sdt l, sdt d=sdt m, sdt e=sdt n
(3) kj=5 m, kl=4 m, lm=4 m
(4) keliling= 5+5+4+4+8=26 m
luas= 2 x trapesium = 2 x (4+7)/2 x 4= 11 x4=44 m persegi