A man starts from a point and moves 3 km North, then turns to West and goes 2 km. He turns North and walks 1 km and then moves 5 km towards East. How far is he from the starting point?
A
11 km
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B
10 km
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C
8 km
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D
5 km
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Solution
The correct option is D5 km
In right triangle AEF, AF=√AE2+EF2=√42+32=5 km