Answer
half the perimeter
Work Step by Step
The variable $s$ in Heron's Formula is most often called "semiperimeter" because it is half of the perimeter of the triangle, in the same way that a semi-circle is understood to be half of a circle.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Section 7.6 - Radical Equations and Problem Solving - Exercise Set - Page 455: 78
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