Calculate the perimeter of the triangle if the length of one side is 7 cm, the length of the second

Calculate the perimeter of the triangle if the length of one side is 7 cm, the length of the second is 13 cm and the third side is shorter than the second by 3 cm.

Given:
a = 7 cm;
b = 13 cm;
c = 3 cm less than b;
P =? cm.
A triangle is a geometric shape, a polygon, with three sides. The sum of the lengths of all its sides is called the perimeter of the triangle. Let’s calculate the perimeter of the triangle using the formula P = a + b + c.

Let’s calculate the side with:

1) 13 – 3 = 10 (cm)
P = 7 + 13 + 10 = 30 (cm)
Answer: 30 cm perimeter of the triangle.