AB=3x Ac=4x BC=5x.bila keliling segitiga ABC=600cm hitunglah luas segitiga ABC

k = 600 cm

k = a + b + c
600 = 3x + 4x + 5x
600 = 12x
x = 600/12
x = 50

ab = 3x = 3 x 50 = 150 cm
ac = 4x = 4 x 50 = 200 cm
bc = 5x = 5x 50 = 250 cm

s = 1/2 keliling
s = 1/2 x 600
s = 300 cm
Luas?

L = √s(s-a)(s-b)(s-c)
L =√300 (300 - 150) (300 - 200) (300 - 250)
L = √ 300 . 150 . 100. 50
L = √ 225000000
L = 15000 cm²