Question

A green circle has an area of 500 square units. Inside the circle is a smaller yellow circle with an area of 100 square units. If a dart is randomly thrown at the larger green circle, such that it is equally likely to land anywhere in this circle, what is the probability that it will land in the smaller yellow circle?

Answer 1

100/500=1/5
1/5=0.2
The propability of landing in the yellow circle is 1/5 or 0.2.