According to the information of Nasa, while the Earth’s equatorial radius is 6378,5 km, its polar radius is 6357 km. This means a difference of % 0,3. Here, there is an indication of this flattening at poles with the following statements of the Qur’an; "We reduce the land from its outlying borders" and "We diminish the land from its outlying borders". Besides, we also point out to the following issue that there is a statement in the verse as "we gradually reduce" instead of "we reduced" For more detailed information, you can visit the websites below.
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Author: Windows of Islam