| 单词 | Hero's formula |
| 释义 | Hero's formula /hear"ohz/, Geom. the formula for the area of a triangle when the sides are given: for a triangle with sides a, b, and c, the area is equal to sqrt(s(s-a)(s-b)(s-c)), where s is equal to one half the perimeter of the triangle. [named after HERO of Alexandria] |
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