There are 2 circles. Once circle has a radius of 40 centimeters and the other circle is inside the first circle with a radius of 20 centimeters. If I randomly drop a coin with a radius of one centimeter inside the larger circle, what is the probability that the coin will land in the smaller circle without any part of the coin touching outside the circle.
NOTE: this question is flawed as Brian in the solution discussion pointed out.
Excel in math and science
Master concepts by solving fun, challenging problems.
It’s hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
Your answer seems reasonable.
Find out if you're right!