IPA: /ˈtɛntɪd/
KK: /tɛntɪd/
Having the characteristics of a tent, such as being covered or shaped like one.
The festival area was tented to provide shade for the visitors.
Tented → It is formed from "tent" (from Old French *tente*, meaning a portable shelter) and the suffix "-ed" (indicating a state or condition). The word "tented" means being in a state of having a tent or being covered by a tent.
Imagine a place where you are 'covered' by a 'tent' — that's what 'tented' means, being in a state of having a tent.