Inradius of N-gon Formula

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Inradius of N-gon is defined as the radius of the circle which is inscribed inside the N-gon. Check FAQs
ri=le2tan(πNSides)
ri - Inradius of N-gon?le - Edge Length of N-gon?NSides - Number of Sides of N-gon?π - Archimedes' constant?

Inradius of N-gon Example

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Here is how the Inradius of N-gon equation looks like with Values.

Here is how the Inradius of N-gon equation looks like with Units.

Here is how the Inradius of N-gon equation looks like.

12.0711Edit=10Edit2tan(3.14168Edit)
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Inradius of N-gon Solution

Follow our step by step solution on how to calculate Inradius of N-gon?

FIRST Step Consider the formula
ri=le2tan(πNSides)
Next Step Substitute values of Variables
ri=10m2tan(π8)
Next Step Substitute values of Constants
ri=10m2tan(3.14168)
Next Step Prepare to Evaluate
ri=102tan(3.14168)
Next Step Evaluate
ri=12.0710678118655m
LAST Step Rounding Answer
ri=12.0711m

Inradius of N-gon Formula Elements

Variables
Constants
Functions
Inradius of N-gon
Inradius of N-gon is defined as the radius of the circle which is inscribed inside the N-gon.
Symbol: ri
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Edge Length of N-gon
Edge Length of N-gon is the length of the line segment joining two adjacent vertices of N-gon.
Symbol: le
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Number of Sides of N-gon
Number of Sides of N-gon is the number of line segments required to make a N-gon.
Symbol: NSides
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Archimedes' constant
Archimedes' constant is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.
Symbol: π
Value: 3.14159265358979323846264338327950288
tan
The tangent of an angle is a trigonometric ratio of the length of the side opposite an angle to the length of the side adjacent to an angle in a right triangle.
Syntax: tan(Angle)

Other formulas in Radius of N gon category

​Go Circumradius of N-gon
rc=le2sin(πNSides)

How to Evaluate Inradius of N-gon?

Inradius of N-gon evaluator uses Inradius of N-gon = Edge Length of N-gon/(2*tan(pi/Number of Sides of N-gon)) to evaluate the Inradius of N-gon, The Inradius of N-gon formula is defined as the radius of the circle which is inscribed inside the N-gon. Inradius of N-gon is denoted by ri symbol.

How to evaluate Inradius of N-gon using this online evaluator? To use this online evaluator for Inradius of N-gon, enter Edge Length of N-gon (le) & Number of Sides of N-gon (NSides) and hit the calculate button.

FAQs on Inradius of N-gon

What is the formula to find Inradius of N-gon?
The formula of Inradius of N-gon is expressed as Inradius of N-gon = Edge Length of N-gon/(2*tan(pi/Number of Sides of N-gon)). Here is an example- 12.07107 = 10/(2*tan(pi/8)).
How to calculate Inradius of N-gon?
With Edge Length of N-gon (le) & Number of Sides of N-gon (NSides) we can find Inradius of N-gon using the formula - Inradius of N-gon = Edge Length of N-gon/(2*tan(pi/Number of Sides of N-gon)). This formula also uses Archimedes' constant and Tangent (tan) function(s).
Can the Inradius of N-gon be negative?
No, the Inradius of N-gon, measured in Length cannot be negative.
Which unit is used to measure Inradius of N-gon?
Inradius of N-gon is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Inradius of N-gon can be measured.
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