I agree with the plan to an extent, but several details still worry me.

At dawn the soldiers marched along the extent ramparts, their banners fluttering in the cold air.

To determine the full extent of the affected area, the research team used satellite imagery and on-the-ground inspections.

I typed the wrong file extention and couldn't open the document.

While preparing his lecture notes, the professor accidentally typed the misspelling extentional instead of the intended term.

Scientists measured the extents of the ice sheet to model future sea-level rise.

We can agree, to some extent, with the proposed plan.

The page extent of the annual report was reduced to lower printing costs.