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Let R be the point (3, 7) and let P and ...

Let R be the point (3, 7) and let P and Q be two points on the line `x+y=5` such that PQR is an equilateral triangle. Then the area of `DeltaPQR` is :

A

`(25)/(4sqrt(3))`

B

`(25sqrt(3))/(2)`

C

`(25)/(sqrt(3))`

D

`(25)/(2sqrt(3))`

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