(2) Obtain the area of the smallest right triangle after division from the area a2 of the square:

(3) When the quantile is 1, s =14a2;

When the quantile is 2, s =116a2;

When the quantile is 3, s =164a2;

…

When the number of divisions is n, sn = 14na2 (n ≥ 1, where n is a positive integer).