"Ni asilimia ngapi ya uso wa Dunia umefunikwa na maji?" which translates to "What percentage of the Earth's surface is covered by water?"

The question asks: "Ni asilimia ngapi ya uso wa Dunia umefunikwa na maji?" which translates to "What percentage of the Earth's surface is covered by water?"

Approximately 71% of the Earth's surface is covered by water.

The final answer is $\text{71}$.