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Inradius of Pentagon given Area Formula

GoInradius of Pentagon given Edge Length using Central Angle Formula

GoInradius of Pentagon given Circumradius using Central Angle Formula

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The Inradius of Pentagon is defined as the radius of the circle which is inscribed inside the Pentagon. Check FAQs

r i = \frac{\sqrt{25 + (10 \cdot \sqrt{5})}}{10} \cdot \sqrt{4 \cdot \frac{A}{\sqrt{25 + (10 \cdot \sqrt{5})}}}

r_i - Inradius of Pentagon?A - Area of Pentagon?

Inradius of Pentagon given Area Example

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Here is how the Inradius of Pentagon given Area equation looks like with Values.

Here is how the Inradius of Pentagon given Area equation looks like with Units.

Here is how the Inradius of Pentagon given Area equation looks like.

6.8408 = \frac{\sqrt{25 + (10 \cdot \sqrt{5})}}{10} \cdot \sqrt{4 \cdot \frac{170}{\sqrt{25 + (10 \cdot \sqrt{5})}}}

6.8408m = \frac{\sqrt{25 + (10 \cdot \sqrt{5})}}{10} \cdot \sqrt{4 \cdot \frac{170m²}{\sqrt{25 + (10 \cdot \sqrt{5})}}}

6.8408 = \frac{\sqrt{25 + (10 \cdot \sqrt{5})}}{10} \cdot \sqrt{4 \cdot \frac{170}{\sqrt{25 + (10 \cdot \sqrt{5})}}}

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Inradius of Pentagon given Area Solution

Follow our step by step solution on how to calculate Inradius of Pentagon given Area?

FIRST Step Consider the formula

r i = \frac{\sqrt{25 + (10 \cdot \sqrt{5})}}{10} \cdot \sqrt{4 \cdot \frac{A}{\sqrt{25 + (10 \cdot \sqrt{5})}}}

Next Step Substitute values of Variables

∴

r i = \frac{\sqrt{25 + (10 \cdot \sqrt{5})}}{10} \cdot \sqrt{4 \cdot \frac{170m²}{\sqrt{25 + (10 \cdot \sqrt{5})}}}

Next Step Prepare to Evaluate

∴

r i = \frac{\sqrt{25 + (10 \cdot \sqrt{5})}}{10} \cdot \sqrt{4 \cdot \frac{170}{\sqrt{25 + (10 \cdot \sqrt{5})}}}

Next Step Evaluate

∴

r i = 6.84083220785453m

LAST Step Rounding Answer

∴

r i = 6.8408m

Inradius of Pentagon given Area Formula Elements

Variables

Functions

Inradius of Pentagon

The Inradius of Pentagon is defined as the radius of the circle which is inscribed inside the Pentagon.

Symbol: r_i

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Inradius of Pentagon

Area of Pentagon

The Area of Pentagon is the amount of two-dimensional space taken up by a Pentagon.

Symbol: A

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Area of Pentagon

sqrt

A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.

Syntax: sqrt(Number)

Other Formulas to find Inradius of Pentagon

Go Inradius of Pentagon given Edge Length using Central Angle

r i = \frac{l e}{2 \cdot \tan (\frac{π}{5})}

Go Inradius of Pentagon given Circumradius using Central Angle

r i = r c \cdot \cos (\frac{π}{5})

Go Inradius of Pentagon given Circumradius

r i = \frac{\sqrt{25 + (10 \cdot \sqrt{5})}}{\sqrt{50 + (10 \cdot \sqrt{5})}} \cdot r c

Go Inradius of Pentagon given Height using Central Angle

r i = \frac{h}{1 + (\frac{1}{\cos (\frac{π}{5})})}

How to Evaluate Inradius of Pentagon given Area?

Inradius of Pentagon given Area evaluator uses Inradius of Pentagon = sqrt(25+(10*sqrt(5)))/10*sqrt(4*Area of Pentagon/sqrt(25+(10*sqrt(5)))) to evaluate the Inradius of Pentagon, The Inradius of Pentagon given Area formula is defined as the length of the line joining the center and a point on the incircle of Pentagon, calculated using area of Pentagon. Inradius of Pentagon is denoted by r_i symbol.

How to evaluate Inradius of Pentagon given Area using this online evaluator? To use this online evaluator for Inradius of Pentagon given Area, enter Area of Pentagon (A) and hit the calculate button.

FAQs on Inradius of Pentagon given Area

What is the formula to find Inradius of Pentagon given Area?

The formula of Inradius of Pentagon given Area is expressed as Inradius of Pentagon = sqrt(25+(10*sqrt(5)))/10*sqrt(4*Area of Pentagon/sqrt(25+(10*sqrt(5)))). Here is an example- 6.840832 = sqrt(25+(10*sqrt(5)))/10*sqrt(4*170/sqrt(25+(10*sqrt(5)))).

How to calculate Inradius of Pentagon given Area?

With Area of Pentagon (A) we can find Inradius of Pentagon given Area using the formula - Inradius of Pentagon = sqrt(25+(10*sqrt(5)))/10*sqrt(4*Area of Pentagon/sqrt(25+(10*sqrt(5)))). This formula also uses Square Root (sqrt) function(s).

What are the other ways to Calculate Inradius of Pentagon?

Here are the different ways to Calculate Inradius of Pentagon-

Inradius of Pentagon=(Edge Length of Pentagon)/(2*tan(pi/5))
Inradius of Pentagon=Circumradius of Pentagon*cos(pi/5)
Inradius of Pentagon=sqrt(25+(10*sqrt(5)))/sqrt(50+(10*sqrt(5)))*Circumradius of Pentagon

Can the Inradius of Pentagon given Area be negative?

No, the Inradius of Pentagon given Area, measured in Length cannot be negative.

Which unit is used to measure Inradius of Pentagon given Area?

Inradius of Pentagon given Area is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Inradius of Pentagon given Area can be measured.

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