A missing helecopter is reported to have crashed inside the lake shown in the figure.What is the probability that it crashed inside the lake shown in the figure?
+310 I'm assuming you mean that it has crashed inside the forest, and the probablity that it has crashed in the lake.
This is a case of geometric probability.
The total area of the entire forest is 4.5*9.
The area of the lake is 3*2.5
The probability therefore is \(\frac{2.5*3}{4.5*9}=\frac{5}{27}\)
