400 = 25x2 – 9x2
400 = 16x2
400/16 = x2
25 = x2
x = √25
x = 5
Luas segitiga = ½ . a . t
L = ½ . 20 . 15
L = 10 . 15
L = 150 cm2
400 = 25x2 – 9x2
400 = 16x2
400/16 = x2
25 = x2
x = √25
x = 5
Luas segitiga = ½ . a . t
L = ½ . 20 . 15
L = 10 . 15
L = 150 cm2
Editor: Annisa Fadilla