130=(1/3)(13)pix^2 times both sides by 3 390=13pix^2 divide both sides by 13 30=pix^2 divide both sides by pi 30/pi=x^2 sqrt both sides x≈3.09 radius is abou 3 units
since it's only a translation, take one point as an example. lets say the bottom right point on trapezoid P is point A, and the translated point on P' is A'. the coordinates of A are (-3,2) while the coordinates of A' are (5,-3). (-3+x,2+y)=(5,-3). -3+x=5, x=8; 2+y=-3, y=-5
