Triangle eq

Calculate accurate to hundredths cm height of an equilateral triangle with a side length 12 cm. Calculate also its perimeter and area.

Correct answer:

h =  10.39 cm
o =  36 cm
S =  62.35 cm2

Step-by-step explanation:

h=122(12/2)2=6 3=10.39 cm
o=3 12=36 cm
S=12 122(12/2)2/2=36 3=62.35 cm2

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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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