# EQUILATERAL TRIANGLE AREA, HEIGHT AND SECTION PROPERTIES CALCULATOR

Equilateral triangle area, altitude (height), distances from the centroidal axes to the vertices , second moment of area and radius of gyration about the centroidal axes are calculated parameters by following calculator.

Equilateral triangle formulas for calculations are given in the "List of Equations" section.

### Triangle Section Properties Calculator: Unit System (Quick selection) MetricInch INPUT PARAMETERS Parameter Value Side length [a] mm cm m inch ft
 RESULTS Parameter Value Cross section area [A] --- mm^2 cm^2 inch^2 ft^2 Second moment of area about x axis [Ix] --- mm^4 cm^4 inch^4 ft^4 Second moment of area about y axis [Iy] --- Radius of gyration [rx] --- mm cm m inch ft Radius of gyration [ry] --- Altitude [h] --- mm cm m inch ft Distance from the centroid to the vertice [xc] --- Distance from the centroid to the vertice [yc] ---

Note: Use dot "." as decimal separator.

### Definitions:

Equilateral Triangle: A triangle with all three sides of equal length.

Second Moment of Area: The capacity of a cross-section to resist bending.

Radius of Gyration (Area): The distance from an axis at which the area of a body may be assumed to be concentrated and the second moment area of this configuration equal to the second moment area of the actual body about the same axis.

### List of Equations:

 Equilateral Triangle Parameter Symbol Equation Cross section area A A = 0.4330a2 Altitude h h=a*(3^0.5)/2 Area moment of inertia Ix Ix = 0.01804a4 Area moment of inertia Iy Iy = 0.01804a4 Distance from the centroid to the back of the long leg xc xc=0.5000a Distance from the centroid to the back of the short leg yc yc=0.5774a Radius of gyration rx rx = 0.2041a Radius of gyration ry ry = 0.2041a