This math worksheet focuses on calculating the area and perimeter of rectangles. Each problem provides the dimensions of a rectangle, specifying its width and length in various units such as millimeters, meters, feet, inches, or centimeters. The worksheet lists 18 rectangles, and students are expected to find the perimeter and area for each one using the given dimensions. Sample problems include: 1. Find the area and perimeter of a rectangle with dimensions 20 mm by 25 mm. 2. Calculate the area and perimeter of a rectangle with dimensions 18 m by 5 m. 3. Determine the area and perimeter of a rectangle with dimensions 9 ft by 17 ft.