flowerpuff
Sisi miring = c = 20 cm sisi siku2 = a = 12 cm a² + b² = c² 144 + b² = 400 b² = 256 b = 16 luas segitiga = 0.5 x alas x tinggi = 0.5 x 16 x 12 = 96 cm²
alas = a tinggi = t a/t = 2/3 3a = 2t a = 2/3 t luas segitiga = 243 0.5 x a x t = 243 0.5 x 2/3 x t x t = 243 t² = 729 t = 27
sisi siku2 = a = 12 cm
a² + b² = c²
144 + b² = 400
b² = 256
b = 16
luas segitiga = 0.5 x alas x tinggi = 0.5 x 16 x 12 = 96 cm²
alas = a
tinggi = t
a/t = 2/3
3a = 2t
a = 2/3 t
luas segitiga = 243
0.5 x a x t = 243
0.5 x 2/3 x t x t = 243
t² = 729
t = 27
semoga membantu yaa :)