Mango farm contains 1250 mango trees. each tree produces an average of 160 mango’s during the summer how many such mango forms are needed to produce 1 million mango’s during the summer

Use stokes' theorem to evaluate c f · dr where c is oriented counterclockwise as viewed from above. f(x, y, z) = xyi + 5zj + 7yk, c is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 81.