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PQR is an equitateral triangle such that...

PQR is an equitateral triangle such that the vertices Q and R lie on the line `x+y=sqrt2 and x+y=7sqrt2` respectively. If P lie between the two lines at a distance 4 from one them then the length of side of equilateral triangle PQR is (in units)

A

8

B

`(4sqrt7)/sqrt3`

C

`sqrt85/3`

D

`(4sqrt5)/sqrt3`

Text Solution

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The correct Answer is:
B
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