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60 = x 6
60 = 5x x 3
20 = 5x
4 = x
perbandingan = 2:3
2(4) = 8
3(4) = 12
maka panjang sisi2 sejajarnya adalah 8 dan 12
=> 5n/2 x 6 = 60
=> 5n x 3 = 60
=> 15n = 60
=> n = 60/15
=> n = 4
sisi" sejajar
(2) 2 x n = 2x4 = 8 cm
(3) 3 x n = 3x4 = 12 cm