If O is the centre of the larger circle, what is the probability that point chosen at random within the circumference of the larger circle, lies outside the smaller circle!?
Answers
Answered by
7
Explanation:
Let S denote the set of points inside the circle with radius r, and let A denote the set of point inside the concentric circle with radius
2
1
r.
Thus, A consists precisely of those points of S which are closer to the center than to its circumference.
Therefore, p=P(A)=
πr
2
π(
2
r
)
2
=
4
1
l hope it will help u dude
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