A missing helicopter is reported to have crashed somewhere in the rectangular
region as shown in the figure. What is the probability that it crashed inside the lake shown in the figure ?
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The helicopter is equally likely to anywhere in the region.
Area of the entire region where the helicopter can crash = (4.5 x 9) km^2
= 40.5 km^2
Area of the lake = 2.5 x 3 = 7.5 km^2
Therefore, P (helicopter crashed in the lake) = 7.5/40.5
=5/7
= 0.185
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