Answer: The river is 148.3 feet wide.
Step-by-step explanation:
Alright, lets get started.
Please refer the diagram I have attached.
The triangle formed is a right triangle.
Using SOH CAH TOA

Multiplying 100 in both sides



Rounding to the one decimal place

Hence river is 148.3 feet wide. .............. Answer
Hope it will help :)
All you need to do is use the formula to solve. What I do is I plug in the information that I know, and then I just solve. In this case it would be:
V= (4)
- pie(3.14)*4.8(cubed)
3
I hope I was a good help, and if you still need help, come to my page and ask the question on specifically what you need help with. :D
y-y1 = m(x-x1)
where: x1 = 1 y1 = 8 (given point (1,8) and m = -3
y - (8) = -3 (x - (1))
y - 8 = -3 (x-1)
y- 8 = -3x +1
B is the correct answer 12