I believe it would be A but i could be way off
Answer:
1. 98.7 km
2. 303.5 degree
Step-by-step explanation:
Using the alternate angle, the angle at B will be 50 + 10 = 60 degree.
To calculate the length AC of the returning journey, use cosine formula to calculate it.
To find the bearing of the returning journey, use sine rule to calculate it.
Please find the attached file for the solution
Area will change by a factor of 3.5² = 12.25
Sum means add, a number means x, and four means, uh, 4...
x+4. is what you're looking for