The coordinates of the rectangle are (-3,-1), (1,3), (3,1) and (-1,-3).
Draw the given rectangle as shown in the figure below.
Calculate the length of the rectangle as
a = √(4² + 4²) = 4√2
Calculate the width of the rectangle as
b = √(2² + (-2)²) = 2√2
Calculate the area of the rectangle as
A = a*b = (4√2) * (2√2) = 16
Answer: 16
