function areas = PolyAreas(polygons)
%% Find areas of the set of polygons.
polygonsSize = size(polygons, 1);
areas = zeros(polygonsSize, 1);
for i = 1:polygonsSize
areas(i, 1) = polyarea(polygons{i, 1}(:, 1), polygons{i, 1}(:, 2));
end
end