Question

Question please.
An equilateral triangle has a side length of 2x+5. What is the expression for the perimeter of the triangle?

Answer 1

Answer:

The length of the equilateral triangle's side is the length of the hypotenuse of the 30-60-90. Using this ratio, we find that the length of this triangle's hypotenuse is 4. Thus the perimeter of the equilateral triangle will be 4 multiplied by 3, which is 12.

Answer 2

$\underline \red{Given:}$

• An equilateral triangle has a side length of 2x+5.

$\underline{\red{To \: find:}}</h3><h3>$

• The expression for the perimeter of the triangle.

$\underline\red{ Solution:}$

• Hence, the triangle has three sides and the sides of equilateral triangle are same. So, the perimeter of the triangle is..

$= > (2x + 5) + (2x + 5) + (2x + 5) \\ \\ = > 3(2x + 5) \\ \\ = > \green{\boxed { 6x + 15}}$

∴ The expression for the perimeter of the triangle is 6x + 15.