The vertices of the land are A (1,1), B (3,1), C (1,6) and D D (3,6). What’s the perimeter and how

Hey dear, hoping i'll be

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?