### Home > MC2 > Chapter 6 > Lesson 6.1.4 > Problem 6-41

6-41.

Remember the area of a circle is *r*^{2}π.

To find the area of the entire circle, substitute 1 for *r*: Area=(1^{2})π

Since only half the circle is shaded, we only need half of the entire area calculated. Therefore, divide your answer by 2.

It is about 1.57 square units.

See part (a). This time only one-fourth of the circle is shaded.