Final answer:
Heron's Area Formula, A=√[s(s-a)(s-b)(s-c)], calculates the triangle's area using side lengths a, b, and c, with s being the semi-perimeter. Heron of Alexandria, a Greek mathematician, not only provided this formula but also engineered automatic machines.
Step-by-step explanation:
Heron's Area Formula
Heron's Area Formula is used to calculate the area of a triangle when the lengths of its three sides are known. The formula is given by A = √[s(s-a)(s-b)(s-c)], where A is the area of the triangle, a, b, and c are the lengths of the sides of the triangle, and s is the semi-perimeter of the triangle, calculated as s = (a + b + c) / 2. The requirements to use this formula are simply the measurements of all three sides of the triangle, and that the side lengths must satisfy the triangle inequality theorem so that a valid triangle is formed.
Heron of Alexandria
Heron of Alexandria was a Greek mathematician and engineer who lived around the 1st century AD. One interesting fact about Heron is that aside from his famous formula for calculating the area of a triangle, he also built a variety of machines, including mechanisms that could automatically open temple doors or dispense water, showcasing his engineering prowess alongside his mathematical contributions.