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Question

ABCDEF is a regular hexagon whose centre is O. The ¯¯¯¯¯¯¯¯AB+¯¯¯¯¯¯¯¯AC+¯¯¯¯¯¯¯¯¯AD+¯¯¯¯¯¯¯¯AE+¯¯¯¯¯¯¯¯AF is

A
2¯¯¯¯¯¯¯¯AO
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B
3¯¯¯¯¯¯¯¯AO
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C
5¯¯¯¯¯¯¯¯AO
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D
6¯¯¯¯¯¯¯¯AO
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Solution

The correct option is D 6¯¯¯¯¯¯¯¯AO
Since it is a regular hexagon,
¯¯¯¯¯¯¯¯AB=¯¯¯¯¯¯¯¯¯ED,¯¯¯¯¯¯¯¯AF=¯¯¯¯¯¯¯¯¯CD

Now, ¯¯¯¯¯¯¯¯AB+¯¯¯¯¯¯¯¯AC+¯¯¯¯¯¯¯¯¯AD+¯¯¯¯¯¯¯¯AE+¯¯¯¯¯¯¯¯AF=¯¯¯¯¯¯¯¯AE+¯¯¯¯¯¯¯¯¯ED+¯¯¯¯¯¯¯¯AC+¯¯¯¯¯¯¯¯¯CD+¯¯¯¯¯¯¯¯¯AD=3¯¯¯¯¯¯¯¯¯AD

Now, since O is the centre of the hexagon, O will be the midpoint of AD
3¯¯¯¯¯¯¯¯¯AD=6¯¯¯¯¯¯¯¯AO

624141_586745_ans.PNG

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