16. You can use Heron's formula to determine the area of a triangle given all three side lengths. The formula is A = Vs(s - a)(s - b)(s - c), where s represents the half-perimeter of the triangle and a, b, and c are the three side lengths. What is the exact area of a triangle with sides of 8 mm, 10 mm, and 12 mm? Express your answer as an entire radical and as a mixed radical