Free ACT Practice Question

Question 1 of 1
ID: ACT-M-101
Section: Math
Topics: Statistics & Probability; Probability
Difficulty level: Hard

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figure

The figure above shows a dartboard. The radius of the outermost circle is $4$ inches, the radius of the innermost black circle is $1$ inch, and the width of the black ring is $1$ inch. If Brian throws a dart and it hits the dartboard, what is the probability that it hits any of the black parts of the dartboard?

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