Two tangents of the circle $x^2+y^2=8$ at A and B meet at P (-4,0) then find the area of quadrilateral PAOB.

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Two tangents of the circle $x^2+y^2=8$ at $A$ and $B$ meet at $P =(-4,0)$ then find the area of quadrilateral $PAOB$.

Here, $O$ is the origin.

Distance of $P$ from $O$ is $4$ unit.

$$OA=OB=2\sqrt 2$$

Therefore $$OP^2=OA^2+AP^2$$ $$AP=2\sqrt 2$$

Hence $$\Delta POA=4$$ $$ar(PAOB)=8$$

This was a true of false question. I modified it a bit. Basically, the answer says the area is not 8sq unit. What am I doing wrong.

There is another sub question to this

Is the area of quadrilateral formed by the tangents from an external point with length of tangent 2r?

From the way I have solved, I am inclined to say no, but since it says my answer is wrong, please help me verify this.