Regular polygon circumscribed to a circle Calculator

Calculates the side length and area of the regular polygon circumscribed to a circle.

Regular polygon circumscribed to a circle
number of sides n
    1. n=3,4,5,6....
inradius r

side length a
    1.  
polygon area Sp
    1.  
circle area Sc
    1.  
area ratio Sp/Sc
    1.  
Regular polygon circumscribed to a circle
[1-10] /17Disp-Num
BACK NEXT
[1]  2018/06/09 21:47   Male / 60 years old level or over / A retired people / Very /
Purpose of use
Used to create a Pentagon for a power tool workstation with the biggest possible sides. Thanx for the calculator and the effort.
[2]  2018/03/21 00:04   Male / 60 years old level or over / An engineer / Useful /
Purpose of use
Building a wooden frame. Didn''t want to spend the time to derive calculations myself.
[3]  2018/03/20 20:37   Male / Under 20 years old / High-school/ University/ Grad student / - /
Comment/Request
area of regular polygon circumscribed about the circle
[4]  2017/09/13 20:17   Male / 50 years old level / Others / Very /
Purpose of use
Cutting out a clock face
[5]  2017/08/06 01:24   - / 60 years old level or over / Others / Very /
Purpose of use
Building a telescope to hold a 12.5 in. mirror. To build a 15 sided tube over a 14 inch sonotube (inside diameter), with walls 1/8 in. thick. so that sonutube can act as a bearing for the focuser holder part of the tube.
[6]  2017/06/03 09:01   Male / 20 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Finding size of center post needed to fit eight 1-inch flat plates in an octagon shape around it
[7]  2017/05/17 02:57   - / 50 years old level / A retired people / Very /
Purpose of use
To find the size of a concrete base required to support a round tank of diameter 12'
[8]  2017/02/01 08:15   Male / 50 years old level / An office worker / A public employee / Very /
Purpose of use
To copy the formula for use in a collision detection routine.
[9]  2016/10/03 07:25   Female / 30 years old level / High-school/ University/ Grad student / Very /
Purpose of use
To figure out what the length of the sides of my windmill should be given a specific radius.
[10]  2015/05/05 04:55   Male / 50 years old level / A retired people / Very /
Purpose of use
I want to build an octagonal deck and place a circular dome on it. Knowing the side length of the octagon that will circumscribe the dome (the radius of which I already know) tells me how long the longest deck board must be.
Comment/Request
Thanks!

BACK NEXT

Thank you for your questionnaire.
Sending completion

Back

To improve this 'Regular polygon circumscribed to a circle Calculator', please fill in questionnaire.
Male or Female ?
Male Female
Age
Under 20 years old 20 years old level 30 years old level
40 years old level 50 years old level 60 years old level or over
Occupation
Elementary school/ Junior high-school student
High-school/ University/ Grad student A homemaker An office worker / A public employee
Self-employed people An engineer A teacher / A researcher
A retired person Others
Useful?
Very Useful A little Not at All
Purpose of use?
Comment/Request (Click here to report a bug).Bug report (Click here to report questionnaire.)
Calculation bug(Please enter information such as specific input values, calculation result, correct result, and reference materials (URL and documents).)
Text bug(Please enter information such as wrong and correct texts)
Your feedback and comments may be posted as customer voice.
送信