# The side of the triangle is 6.3 cm, 20.8 cm less than the second side and 0.9 cm

The side of the triangle is 6.3 cm, 20.8 cm less than the second side and 0.9 cm more than the third side. Find the perimeter of the triangle

The first side is 6.3 cm and it is 20.8 cm less than the second.

So if we add 20.8 cm to the first side, we get the second side:

1) 6.3 + 20.8 = 27.1 (cm) the length of the second side of the triangle.

2) 6.3 – 0.9 = 5.4 (cm) the length of the third side of the triangle.

The perimeter of a polygon is the sum of all its sides.

The perimeter of a triangle is calculated using the formula:

P = a + b + c, where P is the perimeter of the triangle, a, b and c are the first, second and third sides.

3) 6.3 + 27.1 + 5.4 = 38.8 (cm) perimeter of the triangle.

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