Question

Luas segitiga 150, perbandingan sisi 3:4:5 sisi paling panjang berapa?

Answer 1

Luas segitiga = 1/2.alas.tinggi
150 = 1/2.a.t
a.t = 300

jumlah perbandingan sisi = 3+4+5 = 12
a = 3/12
t = 4/12
a.t = 300
3/12x . 4/12x = 300
1/12 x^2 = 300
x^2 = 3600
x = 60

panjang sisi sisi segitiga 
3/12 x 60 = 15
4/12 x 60 =  20
5/12 x 60 = 25