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2D Shapes

Pentagon (5 Sides) Area and Dimensions Calculators

Overview:

Pentagon is a two-dimensional polygon with five straight sides and five interior angles. In a regular pentagon, all sides are of equal length, and each interior angle measures 108 degrees. Pentagons can also be irregular, where side lengths and angles may differ. The shape is commonly found in nature, architecture, and design and is often associated with symmetry and balance.

Calculator for Area of a Pentagon (5 Sides)

Instructions:

  1. Enter all but one value in available calculator fields. refer to diagram for value definition.
  2. Choose the units you would like to use default value is meters (m).
  3. Choose how many decimal places you wish answer to round to, the default value is one.
  4. Press solve button to find remaining unknown value.
  5. To perform a new calculation or you wish to clear current values use the reset button to clear values and start again.
  6. The formulas used for each calculator can be viewed by expanding the 'Click to Show Formula' section below.
model of a pentagon

Area of a pentagon (5 sides) equals

if inscribed radius (b) equals

and side length (c) equals

requirements not met -
please add all but one value in available fields.

Require different units not displayed?
CONVERT VARIOUS UNITS HERE

Click to Show Formula
image of used formula

Calculator for Circumscribed Radius and Inscribed Radius of a Pentagon (5 Sides)

Instructions:

  1. Enter all but one value in available calculator fields. refer to diagram for value definition.
  2. Choose the units you would like to use default value is meters (m).
  3. Choose how many decimal places you wish answer to round to, the default value is one.
  4. Press solve button to find remaining unknown value.
  5. To perform a new calculation or you wish to clear current values use the reset button to clear values and start again.
  6. The formulas used for each calculator can be viewed by expanding the 'Click to Show Formula' section below.
model of a pentagon

Circumscribed Radius (a) of a pentagon (5 sides) equals

if inscribed radius (b) equals

requirements not met -
please add all but one value in available fields.

Require different units not displayed?
CONVERT VARIOUS UNITS HERE

Click to Show Formula
image of used formula

Calculator for Circumscribed Radius and Side Lengths of a Pentagon (5 Sides)

Instructions:

  1. Enter all but one value in available calculator fields. refer to diagram for value definition.
  2. Choose the units you would like to use default value is meters (m).
  3. Choose how many decimal places you wish answer to round to, the default value is one.
  4. Press solve button to find remaining unknown value.
  5. To perform a new calculation or you wish to clear current values use the reset button to clear values and start again.
  6. The formulas used for each calculator can be viewed by expanding the 'Click to Show Formula' section below.
model of a pentagon

Circumscribed radius (a) of a pentagon (5 sides) equals

if side length (c) equals

requirements not met -
please add all but one value in available fields.

Require different units not displayed?
CONVERT VARIOUS UNITS HERE

Click to Show Formula
image of used formula