Express your answer in exact form.

Find the area of one segment formed by a square with sides of [tex]6^{\prime \prime}[/tex] inscribed in a circle.

(Hint: Use the ratio of [tex]1: 1: \sqrt{2}[/tex] to find the radius of the circle.)

[tex]A = (-\pi - \square) \text{ inches}^2[/tex]



Answer :

Let's solve the problem step by step:

1. Calculate the Diagonal of the Square:
- Given the side length of the square is [tex]\(6\)[/tex] inches.
- In a square, the diagonal can be found using the ratio [tex]\(1:1:\sqrt{2}\)[/tex] because each half-angle of the square forms a right triangle.
- Utilizing this ratio, the diagonal [tex]\(d\)[/tex] of the square is:
[tex]\[ d = 6 \times \sqrt{2} \][/tex]

2. Calculate the Radius of the Circle:
- The diagonal of the square equals the diameter of the circle.
- Hence, the diameter [tex]\(D\)[/tex] of the circle is:
[tex]\[ D = 6\sqrt{2} \][/tex]
- The radius [tex]\(r\)[/tex] of the circle is half of the diameter:
[tex]\[ r = \frac{6\sqrt{2}}{2} = 3\sqrt{2} \][/tex]

3. Calculate the Area of the Circle:
- The formula for the area of a circle is [tex]\(A = \pi r^2\)[/tex].
- With the radius [tex]\(r = 3\sqrt{2}\)[/tex], the area of the circle [tex]\(A_{\text{circle}}\)[/tex] is:
[tex]\[ A_{\text{circle}} = \pi (3\sqrt{2})^2 = \pi \times 18 = 18\pi \text{ square inches} \][/tex]

4. Calculate the Area of the Square:
- The area of a square is given by side length squared:
[tex]\[ A_{\text{square}} = 6^2 = 36 \text{ square inches} \][/tex]

5. Calculate the Area of One Segment:
- The total area outside the square but inside the circle is:
[tex]\[ A_{\text{circle}} - A_{\text{square}} = 18\pi - 36 \][/tex]
- There are four segments formed by the square inside the circle. Therefore, the area of one segment is:
[tex]\[ \text{Area of one segment} = \frac{18\pi - 36}{4} = \frac{18\pi}{4} - \frac{36}{4} = \frac{9\pi}{2} - 9 \][/tex]

Thus, the area of one segment formed by the square inscribed in the circle is:

[tex]\[ A = \frac{9\pi}{2} - 9 \text{ square inches} \][/tex]