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单词
hero's formula
释义
WordReference Random House Unabridged Dictionary of American English © 2024
He
′
ro's for
′
mula
(hēr
′
ōz),
USA pronunciation
[
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 √
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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更新时间:2025/9/20 22:35:12