Derive the equation of the parabola with a focus at (2, 4) and a directrix of y = 8.
1 answer:
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Answer:
The missing measurement is 9 miles
Step-by-step explanation:
we know that
The Area of a parallelogram is equal to
where
b is the length of any base
h is the corresponding altitude
The altitude (or height) of a parallelogram is the perpendicular distance from the base to the opposite side (which may have to be extended).
In the figure, the altitude corresponding to the base is 4 miles
substitute
Solve for b
Divide by 4 both sides
therefore
The missing measurement is 9 miles