5/26
27/5
5/72
5/27

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The helecopter is likely to crash anywhere in the region.

Area of entire region where the helecopter can crash=(9x4.5)Sq.km=40.5 Sq.km

The length and the breath of the lake =(9-6)km and (4.5-2)km respectively

i.e.,

l=3km andb=2.5km.Area of lake=(3x2.5)km^2=7.5 Sq.km

i.e.

P(probability that the helecopter can crash inside the lake)=7.5/40.5=75/405=5/27Hence answer is 5/27