A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
How do we find the area of a nonagon if each side is 3 cm? Please and thanks.
anonymous
 4 years ago
How do we find the area of a nonagon if each side is 3 cm? Please and thanks.

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Nanagon has nine sides. So, it forms 9 triangles with the center. Find the area of one of these triangles and multiply by 9.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.06,18182*3^2 = 55,6364

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[area= \left( s ^{2}N \right) \div \left( 4\tan \left( 180/N \right) \right)\] Where s is the length of any side N number of sides in your case, N=9, s=0.03 meters

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0It is 6.18182 not 6,18182. Also, using a formula like that blindly is silly.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0omar_86  using a formula like that is also silly. Best to figure it out from the shape and triangles formed. The formula came from doing that fundamental math.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Dear GT, both ways are right...

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Plugging values into a formula does not teach anyone anything.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I did it for 7gon. Sorry. It is a 9gon.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1327934436452:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1327934503376:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0area of triangle = 1/2 * base * height = 1/2 * 3 * 4.12 = 6.18 There are nine triangles. So, the area of Nanagon = 9 * area of each triange = 9 * 6.18 = 55.62 sq units.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Hope that helps you to figure out for ANY ngon.

mathmate
 4 years ago
Best ResponseYou've already chosen the best response.0on "It is 6.18182 not 6,18182." Dear GT, Since we are international in this study forum, it may be interesting to know that there are countries which use the comma "," instead of the decimal point. So 6,18182 is written correctly in his/her region/locality. MM

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0all of you, thnx XD I understand it now!

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0btw, is there a name for the formula Omar used?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Oh yeah....Germans write it that way.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0@14yamak  the formula is nothing but an extension of my calculation. Instead of using the angles I use, you need to represent them in terms of N (number of sides). You will then get the formula by yourself.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0we norwegians write like that too. i'm sorry if my writing methods made some confusion
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.