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Maths CBSE Live product
Class 9 (2025-26)
Herons formula
Annual Revision II -Heron's Formula
6.
Exemplar - Find the length and area
Question:
2
m.
1
. The length of each side of an equilateral triangle having an area of \(16\sqrt{3}\) \(cm^2\) is
\(35 cm\)
8
cm
\(45 cm\)
\(15 cm\)
2
. If the area of an equilateral triangle is \(121\sqrt{3} \ cm^2\), then the perimeter of the triangle is
66
cm
\(36 cm\)
\(45 cm\)
\(12 cm\)
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