See attachment and find the area of the highlighted part
each unit is 1 unit long
basically we have a circle but only a part of it
i don't know how to find the area of that kind
and no, it probably isn't as simple as πr²

The highlighted part is 1/4 of a circle, so to find the answer it is (pi × r^2)/ 4

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?