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Let ABCD be a square of side length 2 un...

Let ABCD be a square of side length 2 units. C2 is the circle through vertices A, B, C, D and C1 is the circle touching all the sides of the square ABCD. L is a line through A. 27. If P is a point on C1 and Q in another point on C2, then 2222 2222 PA PB PC PD QA QB QC QD +++ +++ is equal to (A) 0.75 (B) 1.25 (C) 1 (D) 0.5

A

0.75

B

1.25

C

1

D

0.5

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