lack of knowledge in geology made u say this!
the extend of earth has a meaning in geology by good friend!
when first earth was created it had only water on its surface but by time the soil was extenden on its surface until some time and after that the surface started to move and so on
please loki read some recent science!
when u read Quran read it completly...pasting some verses near together only make u get confused...by the way god says earth has easts and wests and this only meaning that earth is globe!
peace all...study more