tolong dijawab ya kak

2).
a).nilai Z
=6z+4z+125+90(didapat dari adanya tanda siku siku)=360°
=10z+215=360°
=10z=360-215
=10z=145
=z=145÷10
=z=14,5

b).nilai 6z
=6z
=6×14,5
=87°

c).nilai 4z
=4z
=4×14,5
=58°


3).
a).nilai a
=3a+24+65+90=360°
=3a+179=360°
=3a=360-179
=3a=181
=a=181÷3
=a=60,33

b).nilai 3a
=3a
=3×60,33
=181°