Question

What is Rub’ al Khali and where is it located?

Answer 1

It is in the desert of Asia it is the largest contigous sand desert in the world 

hope this answer helped 

Answer 2

Rub'al Khali happens to be the largest sand desert on earth ( in the world ) and it takes up most of the Southern,  Of the Arabian Peninsula , this means that it covers exactly 650,000 Kilo ( Kilometers ) that's 250,000 miles ( squared ) .It gathers a lot of attention from tourists. 

I rally hope that this helps you out a lot.