Equilateral triangle

The equilateral triangle has a 23 cm long side. Calculate its area.

Correct answer:

S =  229.0637 cm2

Step-by-step explanation:

a=23 cm h=a2(a/2)2=232(23/2)219.9186 cm  S=2a h=223 19.9186=229.0637 cm2

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Tips to related online calculators
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

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