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

2-59.

First find the total area of the dartboard. A = *r*^{2}?

16π

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).