Equilateral Triangle - Metric
Calculate the area and perimeter of an equilateral triangle.
This calculator uses metres for measurements.
Equilateral triangle = a triangle with three sides of the same length.
Equilateral Triangle Area and Perimeter
Calculation
- the length of a side in metres
- decimal precision, the number of digits after the decimal point
Results
- the height of the equilateral triangle in metres
- the area of the equilateral triangle in square metres
- the area in square feet
- the area in square inches
- the perimeter of the equilateral triangle in metres
- the perimeter in feet
- the perimeter in inches
Formula
A = ab/4
P = 𝛑R(1+(3H)/(10+√(4-3*H)))
where A is the area of the equilateral triangle
a length of the short diameter
b length of the long diameter
P the perimeter of the ellipse
𝛑 = 3.14159265
R = (a+b)/2
S = (a-b)/2
H = R²/S²
Conversions
one metre (m) = 3.28083989501312 feet (ft) one metre (m) = 39.3700787401575 inches (in) one square metre (m²) = 10.7639104167097 square feet (ft²) one square metre (m²) = 1550.0031000062 square inches (in²)