1. diketahui sisi segitiga samakaki ABC adalah ( 2x + 1 ) cm dan ( 2x - 2 ) cm. Jika keliling segitiga ABC adalah 24 cm, tentukan panjang sisi terpanjang! (beserta cranya )
Brillianttt
Jika kakinya 2x + 1 K = 2. (2x+1) + 2x -2 4x + 2 + 2x -2 = 24 6x = 24 x = 24/6 = 4 sisi terpanjang = 2x + 1 = 2.4 +1 = 8 +1 = 9 cm
jika kakinya 2x -2 K = 2. (2x-2) + 2x +1 4x - 2 + 2x -1 = 24 6x -3 = 24 x = 27/6 = 4,5 sisi terpanjang = 2x + 1 = 2.4,5 +1 = 9 +1 = 10 cm
K = 2. (2x+1) + 2x -2
4x + 2 + 2x -2 = 24
6x = 24
x = 24/6 = 4
sisi terpanjang = 2x + 1 = 2.4 +1 = 8 +1 = 9 cm
jika kakinya 2x -2
K = 2. (2x-2) + 2x +1
4x - 2 + 2x -1 = 24
6x -3 = 24
x = 27/6 = 4,5
sisi terpanjang = 2x + 1 = 2.4,5 +1 = 9 +1 = 10 cm