What is the area of trapezoid ABCD?



Enter your answer as a decimal or whole number in the box. Do not round at any steps.

units²
Trapezoid A B C D on a coordinate plane with vertex A at negative 3 comma 2, vertex B at 1 comma 5, vertex C at negative 7 comma negative 3, and vertex D at 0 comma negative 2. Angle B is shown to be a right angle.