luas = a x t/2 2 luas = a x t 2 x 90 = 4n x 5n 180 = 20n² n² = 180/20 n² = 9 n = √9 n = 3
alas = 4n = 4 x 3 = 12 cm tinggi = 5n = 5 x 3 = 15 cm
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IvanaA
A : T = 4 : 5 Luas segitiga = 1/2 A x t 90 = 1/2 x 4a x 5a ...> misal a Sebagai variabelnya 180 = 20 a² a² = 9 a = 3 maka : tinggi = 5 x a = 5 x 3 = 15cm
tinggi = 5n
luas = 90
luas = a x t/2
2 luas = a x t
2 x 90 = 4n x 5n
180 = 20n²
n² = 180/20
n² = 9
n = √9
n = 3
alas = 4n = 4 x 3 = 12 cm
tinggi = 5n = 5 x 3 = 15 cm
Luas segitiga = 1/2 A x t
90 = 1/2 x 4a x 5a ...> misal a Sebagai variabelnya
180 = 20 a²
a² = 9
a = 3
maka :
tinggi = 5 x a = 5 x 3 = 15cm