Rectangular coordinate system above the area of triangular region PQR -GMAT Expert Solution

Expert GMAT solution by Atlantic GMAT tutor Andrew Geller. This is a a rectangular coordinate plane question from the GMAT prep tests. Here is a detailed blog about it:

In the rectangular coordinate system above, the area of triangular region PQR is

(A) 12.5

(B) 14

(C) 10√2

(D) 16

(E) 25

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