From the condition it is known that the base of an isosceles triangle is 11 cm, and the side is 7 cm. And we need to find the perimeter of the triangle.
Let’s start by remembering what the perimeter of a geometric shape is.
Perimeter is the sum of the lengths of all sides of a geometric figure. In our case, this is the sum of the lengths of the sides of the triangle.
Let’s write the formula:
P = a + b + c;
The sides are equal to each other, since the triangle is isosceles:
P = 2a + c;
Substitute the values into the formula and calculate:
P = 2 * 7 + 10 = 14 + 10 = 24 cm.
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