We need to calculate the weight of a 4×8 សន្លឹក of aluminum plate with a thickness of 1/8 អ៊ីញ.
First, we need to know the density of aluminum and how its thickness affects its volume.

The relationship between the mass (m) and volume (V) of an object can be expressed by the following mathematical formula:
m = ρ × V
where ρ (រ៉ូ) is the density of the object, which describes the mass per unit volume of the object.
The density of aluminum is approximately 2.7g/cm^3.
And 1 អ៊ីញ = 2.54 សង់ទីម៉ែត្រ, ដូច្នេះ 1/8 អ៊ីញ = 0.3175 សង់ទីម៉ែត្រ.

The volume of the aluminum plate can be calculated by the following formula:
V = length × width × thickness = 4cm × 8cm × 0.3175cm
Substituting this volume and the density of aluminum into the mass formula, we can get the weight of the aluminum plate.

The calculation result is: the weight of the aluminum plate is 35.28 grams.
ដូច្នេះ, ក ៤×8 sheet of aluminum plate with a thickness of 1/8 inch weighs 35.28 grams.

4×8 aluminum sheet is the most commonly used one. If you want to purchase and know the 4×8 សន្លឹក 1/8 inch aluminum price, I will give you a detailed quotation.