The perimeter of an equilateral triangle is 60 cm. Then its side is ___ cm.

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Solution

Let the side of the equilateral triangle be ‘a’ cm.

$∴ a + a + a = 60 \Rightarrow 3 a = 60 c m$ ....[1 Mark]

$\Rightarrow a = 20 c m$ ....[1 mark]

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