The total area of Pakistan's irrigated land is:

1. 87,410 sq km
2. 141,000 sq km
3. 151,100 sq km
4. 186,300 sq km

The total area of Pakistan’s irrigated land covers 186,300 sq km, primarily fed by canals from the Indus River. This system, one of the world’s largest, includes the Sukkur Barrage and Tarbela Dam, vital for agriculture.