3 largest cities in the world?

* Population: 37,004,133 (2021)

* Area: 6,200 km² (2,400 sq mi)

2. Delhi, India

* Population: 29,399,144 (2021)

* Area: 1,484 km² (573 sq mi)

3. Shanghai, China

* Population: 26,319,000 (2020)

* Area: 6,340 km² (2,450 sq mi)