How many people can be served with a 1 kg circular cake of medium height?

The number of people that can be served with a 1 kg circular cake depends on several factors, including the size of the slices and the overall density of the cake. However, a general guideline is:

Standard serving size: A typical serving size for cake is about 100-150 grams per person.
Based on this, a 1 kg cake could serve approximately:

10 servings if you cut the cake into 100-gram slices.
7 servings if you cut the cake into 150-gram slices.
So, you can expect to serve between 7 to 10 people with a 1 kg circular cake, depending on how generous the portions are.