Mathematics
28.05.2021 20:41
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A regular hexagon is inscribed in a circle with a radius of 8 ft. find the area

A regular hexagon is inscribed in a circle with a radius of 8 ft. find the area of the shaded region shown. give the exact answer.
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Isaacochoa780
Isaacochoa780
4,9(72 marks)

Step-by-step explanation:

If you plot the focus and the vertex, you see that the focus is on the same vertical line, just 4 units up.  Since the vertex is below the focus and a parabola ALWAYS wraps around the focus, the parabola is a positive y equals x-squared type.  Depending upon what you call standard form will dictate how your answer "looks", although they are both the same parabola.  There are 2 forms:

(x-h)^2=4p(y-k) and

ax^2+bx+c=y

We will work on the first one, then rewrite it into the second one.

Our h value is -5, our k value is 2 (from the vertex (h,k)), and p is defined as the distance between the focus and the vertex.  Our p is 4.  Filling all that in:

(x+5)^2=16(y-2)

That's one form.  If we expand the left side of that form we have

x^2+10x+25=16(y-2)  Now divide both sides by 16 to get

\frac{1}{16}x^2+\frac{5}{8}x+\frac{25}{16}=y-2

Now add 2 to both sides in the form 32/16 to get

\frac{1}{16}x^2+\frac{5}{8}x+\frac{57}{16}=y

They are both the same parabola; pick whichever one fits your needs.

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