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The figure is a triangle. That means it has 3 sides.

The triangle is "equilateral". That means all three sides have the same length.

One side is 5 cm. That means each of the other 2 sides is also 5 cm.

So the perimeter is (5 + 5 + 5) = 15 cm.

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Q: How to find the perimeter of an eQuilateral triangle whose sides measure 5 cm?
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