Answer:
Option B. 134.58 cm²
Step-by-step explanation:
Since one of a triangle with two sides and angle opposite to the third side is represented by area = (a.c sinθ)
Since a = 14 cm
c = 20 cm
and θ = 74°
By putting thee values in the formula
Area = (20) (14) (sin74°)
= 140(0.9613)
= 134.58 cm²
Therefore, option B is the answer.
Step-by-step explanation:for the triangle GIF, angle g = 80
angle f = 42 since angle FBA = 138
so angle i = 180 - 42 - 80
= 58