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Home > A2C > Chapter 2 > Lesson 2.1.4 > Problem 2-59


First find the total area of the dartboard. A = r2?


Subtract the area of the lighter, smaller circle from the total area of the whole circle.

16π − 4π = 12π

Divide the difference between the areas of the dartboardand the small circle by the area of the dartboard.

Use the same method from part (a).