Equilateral triangle

Calculate the area of an equilateral triangle with circumference 72cm.

Correct answer:

S =  249.4153 cm2

Step-by-step explanation:

o=72 cm  a=o/3=72/3=24 cm  S=ah/2 h=3/2 a  S=a2 3/4=242 3/4=144 3=249.4153 cm2

Try calculation via our triangle calculator.




Did you find an error or inaccuracy? Feel free to write us. Thank you!










Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?
Pythagorean theorem is the base for the right triangle calculator.
See also our trigonometric triangle calculator.

 
We encourage you to watch this tutorial video on this math problem: video1   video2

Related math problems and questions: