Find the third side of a triangle if its perimeter is 2 1/16 cm and the other two sides are 5/8 cm each.

Find the sum of the two known sides of the triangle.
Since they are equal, we multiply 5/8 cm by 2.
In this case, we get:
2 * 5/8 = 10/8 = 1 2/8 = 1 1/4 cm.
In order to find the value of the length of the third side, you need to subtract a known amount from the perimeter.
The result will be:
2 1/16 – 1 1/4 = 33/16 – 5/4 = 33/16 – 4 * 5/16 = 33/16 – 20/16 = 13/16 cm.
Answer: the length of the third side of the triangle is 13/16 cm.