Question

What is the approximate area of the shaded region?



A.
178.5 square centimeters

B.
100 square centimeters

C.
78.5 square centimeters

D.
21.5 square centimeters
http://lv.k12.com/mediaFiles/Ninth_Grade/Math/Unit17525/Lesson68695/VHS_PA_S2_03_L212_L312_LQ_Q1.gif

Answer 1

@AnswerMyQuestions

Answer 2

@iGreen

Answer 3

Find the area of the square first.

\(A = a^2\)

Where 'a' is the side length.

\(A = 10^2\)

Answer 4

10^2 = ?

Answer 5

100

Answer 6

@iGreen

Answer 7

Yes, now find the area of the circle.

Answer 8

\(A = \pi r^2\)

The diameter is 10, so the radius is 10 / 2 = 5

\(A = (3.14)( 5^2)\)

Answer 9

Simplify

Answer 10

78.5

Answer 11

Now subtract 100 - 78.5

Answer 12

21.5

Answer 13

Yep, that's our answer.

Answer 14

Thanks so much !

Answer 15

No problem \(\Huge\ddot\smile\)