Answer:
42.1
Explanation step-by-step:
Working out the lenght of the blue-dashed line:
SOH
47 is the Hypotenuse.
the blue line is the adjacent.
adjacent= Cos(30) x47
adjacent= 40.7
Working out x :
40.7 is the opposite this time.
x is the adjacent.
x = 40.7/ Tan(44)
x = 42.1

now, there are 1000 grams in one Kilogram, so in 1680 grams, there are 1680/1000 Kilograms, namely 1.680.
This value is very different from the other values
The answer is A: 1 coil in a spring that is 7 inches long
i am not sure so correct me if i am wrong
hope this helps
For a line to be parallel it has to have the same slope as the original line. so the slope is 1/2