where s=(a+b+c+d)/2.
Heron's formula for the area of a triangle is the special case obtained by taking d=0.
... (162) Charles C. Pinckney[?] 14 Federalist Rufus King (14) Other elections: 1792, 1796, 1800, 1804, 1808, 1812, 1816 Source: U.S. Office of the Federal ...