L=a1+a2/2 x t 81=19+8/2 x t 81=27/2t t=81/27/2 t=81 . 2/27 t=162/27 t=6
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Nadiyahsubhan13
(jumlah 2 garis sejajar). t /2 = luas trapesium (19 cm + 8 cm). t /2 = 81 27 cm . t/2 = 81 27t = 81 .2 27t = 162 t = 162 / 27 t = 6 cm jadi, tinggi = 6 cm
a1=19
a2=8
t=?
L=a1+a2/2 x t
81=19+8/2 x t
81=27/2t
t=81/27/2
t=81 . 2/27
t=162/27
t=6
(19 cm + 8 cm). t /2 = 81
27 cm . t/2 = 81
27t = 81 .2
27t = 162
t = 162 / 27
t = 6 cm
jadi, tinggi = 6 cm