9514 1404 393
Answer:
 15 squre units
Step-by-step explanation:
The area of the rectangle is the product of its length and width. The length is AB = 5 units; the width is BC = 3 units. Then the area is ...
 A = LW
 A = (5 units)(3 units) = 15 units²
The area of rectangle ABCD is 15 square units.