Dominica is approximately 751 sq km, while Belarus is approximately 207,600 sq km, making Belarus 27,543% larger than Dominica. Meanwhile, the population of Dominica is ~74,243 people (9.4 million more people live in Belarus).
This to-scale map shows a size comparison of Dominica compared to Belarus. For more details, see an in-depth quality of life comparison of Belarus vs. Dominica using our country comparison tool.