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Subjects
Mathematics State Board
Class 9
Mensuration
Heron's formula
3.
Find the area of an equilateral triangle
Exercise condition:
3
m.
Determine the area of an equilateral triangle whose sides are
40
\(cm\). (Use \(\sqrt{3} = 1.73\))
Area of an equilateral triangle
\(=\)
\(cm^2\)
[
Note
: Round off your answer up to three decimal places]
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