Answer:
We'll call the sides of the triangle a, b, and c, and the angles, A, B, and C.
If you have all three sides, you'll use. Heron's formula. , and the formula for the area of a triangle.
If you have two sides and an angle, you'll use the formula for the area given two angles and a side. A = 1/2ab(sin C).
Step-by-step explanation: