The perimeter of an isosceles triangle is 14 cm. one of its sides is twice longer than another of its sides. find all sides of the triangle.

An isosceles triangle has 2 equal sides so the 3 sides = a a and b
The side that is twice longer than another side make it equal 2*a.
So the total of the 3 sides would equal 14
4a = 14
So 2 sides = 3.5 and the third side = 7.
3.5 + 3.5 + 7 = 14