The coastline of an island may be approximated by a polygon with vertices q(-50, 300), r(150, 200), s(250,0), t(150, -250), u(-200, -250), and v(-450, 50).
a. find the length of the coastline of the island to the nearest foot if each unit on the coordinate grid represents 1 foot. show your work.
b. describe a strategy you could use to calculate the area of the island using only rectangles and triangles. (do not calculate the area.)