Answer
$0.04$
Work Step by Step
The area of the whole board is: $40\cdot40\pi=1600\pi$, and the area of the central circle is: $8\cdot8\cdot\pi=64\pi$. Thus the probability: $\frac{64\pi}{1600\pi}=0.04$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 10 Counting Methods and Probability - 10.3 Define and Use Probability - 10.3 Exercises - Problem Solving - Page 703: 39
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