Triangles

An equilateral triangle with a side of 16 cm has the same perimeter as an isosceles triangle with an arm of 23 cm. Calculate the base x of an isosceles triangle.

Correct answer:

z =  2 cm

Step-by-step explanation:

$$\begin{gathered} x=16\text{cm} \\ y=23\text{cm} \\ {o}_1=o_2 \\ 3\cdot x=2\cdot y+z \\ z=3\cdot x-2\cdot y=3\cdot 16-2\cdot 23=2\text{cm} \end{gathered}$$

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