Chapter 8.4, Problem 23E

### Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Chapter
Section

### Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

# In exercises 23-26, find the exact areas of shaded region.Square inscribed in a circle

To determine

To Find:

The areas of the shaded region.

Explanation

To find the area of the shaded region of the circle, find the area of the circle and square and then subtract the area of the square from the area of the circle.

It is given that the side of the square is 8 in.

Therefore, the area of the square is A=s2.

Therefore, A=8â‹…8=64.

The area of the square is 64 in2.

Next, to find the area of the circle, we need radius of the circle.

The radius can be obtained from the diagonal of the square.

The diagonal of the square is 2s.

Therefore, the diagonal of the square is 82.

The diagonal of the square is equal to the diameter of the circle.

Therefore, the diameter of the circle is 82.

The radius of the circle is r=d2=822=42

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