Equilateral 37341

Calculate an equilateral triangle's perimeter and area with a side of 20 dm.

Correct answer:

o =  60 dm
S =  173.2051 dm2

Step-by-step explanation:

a=20 dm o=3 a=3 20=60 dm
S=43 a2=43 202=100 3=173.2051 dm2

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Tips for related online calculators
The Pythagorean theorem is the base for the right triangle calculator.
Calculation of an equilateral triangle.
See also our trigonometric triangle calculator.

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