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18 inches and it is an equilateral triangle
24 inches You can find the perimeter of a triangle by adding the lengths of all three sides. In this case, since the triangle measures 6, 8, and 10 inches, its perimeter would be the sum of these numbers which is 24 inches.
How many sides has a square got? (4) So if all the sides are 6cm. Perimeter = 6 + 6 + 6 + 6 How many sides does an equilateral triangle have? (3) All the sides are the same length in these shapes so again: Perimeter = 6 + 6 + 6
The perimeter would be 18 cm.
perimeter = sum of sides = 6 in + 8 in + 10 in = 24 in