Selecting anywhere in the shaded region other than the control point will sometimes reveal the area of the shaded region. As with other tool tips, it will not take the graph axes' units into account. Areas are graded based on the shape of the entire filled-in area, not on the specific location of the point defining the area. (There will often be multiple correct placements for the point defining the area.) By selecting the filled-in regions on the graph, you can determine that the area of the canvas covered by the tree is equal to square inches