Answer:
The Rub' al Khali (/ˈrʊb æl ˈkɑːli/; Arabic: ٱلرُّبْع ٱلْخَالِي, the "Empty Quarter") is the sand desert (erg) encompassing most of the southern third of the Arabian Peninsula.
Width: 500 km (310 mi)
Area: 650,010 km2 (250,970 sq mi)
Step-by-step explanation:
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