tolong newwiguna...............................

13.
BE / DE = BC / AC
BE / 3 = 25 / 8
BE = 25/8 x 3
BE = 75 / 8
BE = 9 3/8
BE = 9,375 cm

jawaban C

14.
AC² = AB² + BC²
AC² = 8² + 6²
AC² = 64 + 36
AC² = 100
AC = √100
AC = 10 cm

1/2 . AB . AC = 1/2 . AC . BD
AB . AC = AC . BD
8 . 6 = 10 . BD
48 = 10BD
BD = 48 / 10
BD = 4,8 cm

jawaban B