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Heron's formula
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Heron's formula
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Hero's formula
Noun
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Heron
's
formula
(
singular only
)
The
formula
$A={\sqrt {s(s-a)(s-b)(s-c)}}$
, where
a
,
b
, and
c
are the
sidelengths
of a
triangle
,
s
is its
semiperimeter
, and
A
is its
area
.