The sides of an isosceles triangle are 8cm, and its perimeter is 22cm.

The sides of an isosceles triangle are 8cm, and its perimeter is 22cm. Find the base of the triangle, you should get 6cm.

From the condition it is known that the sides of an isosceles triangle are 8 cm, and the perimeter of the triangle is 22 cm. In order to find the base of the triangle, we compose and solve a linear equation.

Let’s remember the definition of an isosceles triangle. An isosceles triangle is a triangle whose two sides are equal. The perimeter of an isosceles triangle can be found using the formula.

P = 2a + b, where a is the side of the triangle and b is the base of the triangle.

Substitute the known values ​​and solve the equation:

2 * 8 + x = 22;

16 + x = 22;

x = 22 – 16;

x = 6 cm base of the triangle.