Pada jajargenjang ABCD ,panjang AB=(5X-2) Cm dan AD=(3X+2) Cm.jika keliling jajargenjang 64cm.hitunglah a.nilai x b. panjang AB dan CD c.panjang AD dan BC
bantu dong pakek cara yah :)
PutriiGunwns
AB = CD = 5x-2 BC = AD = 3x+2 a.K = AB + BC + CD +DA 64 = 2(5x-2) + 2(3x+2) 64 = (10x-4) + (6x+4) 64 = 16x 64/16 = x ⇨ 4 = x b. panjang AB = CD = 5x-2 ⇨ 5(4)-2 ⇨ 20-2 = 18cm c. panjang AD = BC = 3x+2 ⇨ 3(4)+2 ⇨12+2 = 14cm.
BC = AD = 3x+2
a.K = AB + BC + CD +DA
64 = 2(5x-2) + 2(3x+2)
64 = (10x-4) + (6x+4)
64 = 16x
64/16 = x ⇨ 4 = x
b. panjang AB = CD = 5x-2 ⇨ 5(4)-2 ⇨ 20-2 = 18cm
c. panjang AD = BC = 3x+2 ⇨ 3(4)+2 ⇨12+2 = 14cm.