bagaimana cara mengerjakan nomer 1 dan 2?

1). 5x = 110°
x = 110/5
x = 22

y+17 = 35°
y = 35 - 17
y = 18°

z = 35°

2). K = 2. ( p + l )
62 = 2. ( p + l)
31 = p + l
11 = p - l
p = 31 - 11
p = 20 cm