Area of rectangles worksheets | K5 Learning Worksheets; Math; Grade 3; Geometry; Area of rectangles Buy Workbook. Download & Print Only $6.50. Area of rectangles. Rectangles worksheets: finding the area of a rectangle. In these worksheets, students calculate the area of rectangles by multiplying the length and width of a rectangle. Open PDF. Inches, feet: Worksheet #1 Worksheet #2. Metric cm, m: Worksheet #3 …