Geography : Lifelines of National Economy

प्रति _______ क्षेत्र में सड़क की लंबाई सड़कों के घनत्व के रूप में जानी जाती है। , The length of road per _______ of area is known as the density of roads.

The length of road per _______ of area is known as the density of roads.




Solution
A. 100 sq. km



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