A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

What is the length of one side of a regular octagon if its perimeter is 72cm no answers @awillie98,@iihoop3 and others - will medal a maybe fan

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Im not eve sure how to do this

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    lol its ok girl! no worries @TheSmartOne

  3. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    How many sides does an octagon have?

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    8 of course

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    9

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is the answer

  7. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Great. What does "regular" mean in "regular octagon"?

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    9*8 sides of the octagon is 72

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    a regular octagon is just the regular kind ..wait I thought a octagon had 5 sides? sorry im just so tired

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    lmao no it has 8 sides

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    What is the measure of BAC ? A.28 B.83 C.55 D.93 sorry I just tired ...I wa thinking C

    1 Attachment
  12. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    No. You were correct the first time. An octagon has 8 sides. A regular polygon means that all sides are congruent, and all angles are congruent. Since it has 8 sides of the same length, and the perimeter is 72 cm, then you can divide (72 cm)/8 = 9 cm, so you get that each side is 9 cm long. If you were not told it is a regular octagon, you wouldn't be able to answer the question because the sides would have different lengths.

  13. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    What do you know about the sum of the measures of the angles of a triangle?

  14. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1435685165487:dw|

  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @mathstudent55 can you help me out also

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    can u tll me the answer I have a time limit and I don't want to get in trouble

  17. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    The sum of the measures of the angles of a triangle is 180 degrees. All three angles must add to 180. You were given the measures of two angles. Add them up. Then subtract the sum from 180, and that is the measure of the third angle.

  18. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    We'll do it quickly. What is 62 + 35 = ?

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    97

  20. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Great. 62 + 35 = 97 Now subtract the sum 97, from 180. What is 180 - 97 = ?

  21. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    83

  22. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Correct. To double check, just add: Is 62 + 35 + 83 = 180? Yes, it is, so 83 is correct.

  23. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Ok, gtg. I'll be back in a few hours.

  24. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok thx so much!

  25. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You're welcome. If you see me on OS again and have any questions on math, just tag me or message me,.

  26. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Bye.

  27. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok bye

  28. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.