Final answer:
To find the perimeter of a rectangle, add up the lengths of all four sides. In this case, the perimeter of the rectangle BCDE is 41.6 units.
Step-by-step explanation:
To find the perimeter of a rectangle, you need to add up the lengths of all four sides. In this case, the given lengths are BC = 16.5 and CD = 4.3. Since opposite sides of a rectangle are equal in length, the other two sides are also 16.5 and 4.3. To find the perimeter, add up all four sides: 16.5 + 4.3 + 16.5 + 4.3 = 41.6. So, the perimeter of the rectangle is 41.6 units.