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# Equilateral Triangle Calculator

Enter side, area or diagonals of a regular hexagon then choose a missing value and the calculator will show you a step by step explanation how to find the value.

Hexagon Calculator
Input value you know and select what to compute.
show help ↓↓ examples ↓↓
I want to calculate:
Input one element of a hexagon:
( use letter r to input square root. Ex: $3\sqrt{2} = \text{3r2}$ )
Side
a =

Area
A =
Perimeter
P =

Long
Diagonal
d =

Short
Diagonal
s =
Circumcircle
R =

Incircle
r =
working...
examples
example 1:ex 1:
What is the area of an equilateral triangle of perimeter $90 cm^2$.
example 2:ex 2:
What is the perimeter of an equilateral triangle if its height is $\frac{20}{3} cm^2$?
example 3:ex 3:
If base of an equilateral triangle $50$ inches long, what is the triangle's height?
example 4:ex 4:
$\triangle ABC$ is an equilateral triangle with area 24. Find the perimeter of $\triangle ABC$.

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