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In Heron's formula, what does the letter s usually stand for?

Class 9Area of a Triangle by Heron's FormulaMensuration

AThe semi-perimeter of the triangle
BThe shortest side of the triangle
CThe full perimeter of the triangle
DThe area of the triangle

Step-by-Step Solution

Heron'

s

formula uses

s = \frac{a + b + c}{2}

, the semi-perimeter (half of the perimeter).

Answer: A) The semi-perimeter of the triangle

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