To solve the problem of finding the shaded area (assuming the problem involves a rectangle with a semicircle cut out), follow these steps:

Step 1: Calculate the area of the rectangle

The rectangle has length = 8 and width = 4.
Area of rectangle = length × width = (8×4 = 32) (units²).

Step 2: Calculate the area of the semicircle

The semicircle’s diameter equals the width of the rectangle (4), so its radius (r = \frac{4}{2} = 2).
Area of semicircle = (\frac{1}{2}πr²)
Using (π≈3.14):
Area = (\frac{1}{2}×3.14×2² = \frac{1}{2}×3.14×4 = 6.28) (units²).

Step 3: Find the shaded area

Shaded area = Area of rectangle - Area of semicircle
= (32 - 6.28 = 25.72) (units²).

Answer: (\boxed{25.72}) (assuming units are cm² or similar). If exact value is needed, it’s (32 - 2π). But based on the calculation, the numerical answer is (\boxed{25.72}).

(\boxed{25.72})

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