Answer:
77
Step-by-step explanation:
85-69=16
16/2=8
69+8=77
z = 154°
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
z is an exterior angle of the triangle, then
z = 85° + 69° = 154°
69cm ^2
x =1/12(1-√(97) )
