Question

No 11 & 12 ya ..
pake caranya

Answer 1

Nomor 11

<A = 70°
<ACD = 135°
<ACB = 180°-135° = 45°
<ABC = 180°- (45°+70°)
. = 180°- 115°
. = 65°

nomor 12

c. 5 cm, 12 cm, 13 cm
karena
t = 2\/5^2 + 12^2
. = 2\/25 + 144
. = 2\/169
. = 13 cm

keterangan
2\/ = akar pangkat 2
^ = pangkat

maaf jika salah

Answer 2

11.A

70+<ABC = 135
<ABC = 135-70
          = 65
12.C