Question

The length of two sides of an isoscele traingle are $5cm$ and $8cm$, find perimeter of triangle.

• A. $5\text{cm}$
• B. $21\text{cm}$
• C. $13\text{cm}$
• D. $8\text{cm}$

Answer 1

The correct option is B $21\text{cm}$

If we consider two sides of isosceles triangles are $5\text{cm}$ and third one $8\text{cm}$ then perimeter will be $5\text{cm}+5\text{cm}+8\text{cm}=18\text{cm}$

If we consider two sides of isosceles triangles are $8\text{cm}$ and third one $5\text{cm}$ then perimeter will be $8+8+5=21\text{cm}$