Answer:
2.7 in²
Step-by-step explanation:
Area of ∆BAC : ∆Area of EDF = BC² : EF² (based on the area of similar triangles theorem)
Thus:
Area of ∆EDF = 2.7 in²
8 + y = 3y
8 = 3y - y
8 = 2y
8/2 = y
Answer: x=4
-8-x=x-4x
-8-x=-3x
-8=-2x
x=4
w= 40b
w=40× 5
w=200
......