1. Convert the dimensions of the sheet to inches:
   • Longueur: 4 pieds = 48 Pouces
   • Largeur: 8 pieds = 96 Pouces
2. Convert the thickness to decimal form:
   • 3/16 pouce = 0.1875 Pouces
3. Calculate the area of the sheet in square inches:
   • Surface = Longueur x Largeur = 48 pouces x 96 pouces = 4,608 square inches
4. Calculate the volume of the sheet in cubic inches:
   • Volume = Surface x Épaisseur = 4,608 square inches x 0.1875 pouces = 864 Pouces cubes
5. Convert the volume from cubic inches to cubic feet:
   • Volume (pieds cubes) = Volume (Pouces cubes) / 1728 = 864 Pouces cubes / 1728 = 0.5 pieds cubes
6. Determine the density of aluminum. La densité de l'aluminium est généralement d'environ 0.098 livres par pouce cube.
7. Multiply the volume in cubic feet by the density to calculate the weight in pounds:
   • Poids (Kg) = Volume (pieds cubes) x Density = 0.5 pieds cubes x 0.098 lbs/in³ ≈ 0.049 Kg

Donc, un 4×8 3/16 feuille d'aluminium would weigh approximately 0.049 livres sterling.