b.panjang alas dan tingginya jika luas jajargenjang tersebut 864 cm2.


A. 2t=3a, t=3a/2, b. a.t= 864 cm\xb2, a. 3a/2= 864 cm\xb2, a\xb2 = 864. 2/3, a = 576, a = 221a576, a = 24 cm,
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1. , a) 2t = 3a, t = 3a/2, b) L = alas x tinggi, 864 = a x t subtitusikan t = 3a/2, 864 = a x 3a/2, 864 = 3a^2/2, 1728 = 3a^2, a^2 = 1728/3, a^2 = 576, a = akar(576), a = 24 cm, t = 3a/2 = 3×24/2 = 36 cm, keterangan ^ : pangkat,