If we know that the sum of the two right sides of a right triangle is equal to 8 and what are the two right sides, what is the maximum area of the right triangle?

If we know that the sum of the two right sides of a right triangle is equal to 8 and what are the two right sides, what is the maximum area of the right triangle?

Let the right side of a right triangle be x, then the other right side is 8-x. the area of a right triangle is s. according to the title, s = 12x (8-x) (0 < x < 8), formula, s = - 12 (x-4) 2 + 8; when x = 4, that is, when the two right sides are 4, the area of the triangle is the largest, and the largest area is 8