The number of people a 1.5kg cake can serve depends on the portion size you intend to serve to each person. Cake servings can vary depending on the occasion and serving style. A standard way to estimate the number of servings is by using the size of a typical cake slice.
A common size for a cake slice is around 2 inches by 2 inches (5 cm by 5 cm) and approximately 1 inch (2.5 cm) in height. This size is often used for party or event servings.
To calculate the number of servings:
Determine the volume of the cake: Since the cake is a rectangular prism (assuming a typical cake shape), the volume is calculated by multiplying the length, width, and height of the cake.
Divide the volume by the volume of a standard slice: Divide the volume of the cake by the volume of a typical cake slice to get the number of servings.
Keep in mind that the shape of the cake can vary, and some cakes may be taller or have different dimensions. Additionally, people's appetites vary, and some may prefer larger or smaller slices.
For simplicity, let's assume the cake is a rectangular prism with dimensions that allow for 2-inch by 2-inch slices:
Volume of cake = Length × Width × Height = L × W × H
For example, if the dimensions of the cake are 10 inches (25 cm) in length, 6 inches (15 cm) in width, and 2.5 inches (6.25 cm) in height:
Volume = 10 inches × 6 inches × 2.5 inches ≈ 150 cubic inches
Now, let's assume the standard slice size we mentioned earlier:
Volume of standard slice = 2 inches × 2 inches × 1 inch = 4 cubic inches
Number of servings = Volume of cake / Volume of standard slice
Number of servings ≈ 150 cubic inches / 4 cubic inches ≈ 37.5
So, the 1.5kg cake can serve approximately 37 to 38 people, assuming each person gets a 2-inch by 2-inch slice. Remember, this number may vary depending on the cake's actual dimensions and the size of the slices you cut.