Tinggi suatu jajargenjang 2 kali panjang alasnya. jika luas jajargenjang itu 162 cm2, tentukan panjang alsas dan tinggi jajargenjang tersebut
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tinggi = 2x
luas = 162
luas = alas x tinggi
162 = x × 2x
162 = 2x²
x² = 162/2
x² = 81
x = √81
x = 9
alas = x = 9 cm
tinggi = 2x = 2 x 9 = 18 cm