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anonymous
 one year ago
1.) The area of a regular octagon is 35 cm squared. What is the area of a regular octagon with sides three times as long?
My answer: 315 cm squared. Is that correct?
2.) Name the minor arc and find its measure.
http://assets.openstudy.com/updates/attachments/4fb5f543e4b05565342bcb5akamuela71013373248790474568453162011122648pm17916
My answer: ADB has a measure of 245. Is that correct?
anonymous
 one year ago
1.) The area of a regular octagon is 35 cm squared. What is the area of a regular octagon with sides three times as long? My answer: 315 cm squared. Is that correct? 2.) Name the minor arc and find its measure. http://assets.openstudy.com/updates/attachments/4fb5f543e4b05565342bcb5akamuela71013373248790474568453162011122648pm17916 My answer: ADB has a measure of 245. Is that correct?

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.03.) The figures below are similar. What are a) the ratio of the perimeters and b) the ratio of the areas of the larger figure to the smaller figure? The figures are not drawn to scale. http://assets.openstudy.com/updates/attachments/55bcef17e4b0c4d93d6c2874lollygirl2171438476949164as.jpg My answer: 13/3=169/9. Is that correct?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Michele_Laino @triciaal

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@pooja195 @ganeshie8

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1how do we determine the area of a regular octagon to start with?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1im pretty sure the general solution is that a change in linear measures, scale by ^2 in area

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1so 315 sounds good to me, but i always have to dbl chk with the brute method since i cant recall thrms that well

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright, do your thing.

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1a triangle ... base s, apothem a, area = sa/2 and there is 8 of them area = 4 sa linear measures factor by 3 so: 4(3s)(3a) = 3^2 (4sa) in this case 3^2 (35) is good

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1the link to the arc is bad

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1ok, and what does it mean to be a minor arc?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@amistre64 well firsts things first. Did I get any of them right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I mean that one right.

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1yes, i verified that 315 is correct. on the second one, and the third one, i would perfer to see how you came to your solutions first tho.

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1to determine the solution to number 2, we need to agree on the definition of a minor arc.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Perhaps it's just AB has a measure of 245.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0AB is minor because of the two arcs in the circle AB has a measure of 115 degrees and ADB has a measure of 245. This is what I say

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1perhaps, but that depends on what our definition of a minor arc is ...

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1AB is minor, agreed, since it is less then 180 .. and it is measured for us already as 115

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1we good to move on to #3?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So then it would be ab measured as 115?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Lol...how did I make that mistake?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1:) pretty sure you read minor as "major" ... i read things too fast sometimes as well

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1tell me how you approached #3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0a) ratio of perimeters = 26/6 = 13/3 b) ratio of areas = (13/3)² = 169/9 <A = L²

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1not sure if the notation is correct, since im not taking your class specifically 13:3, or 1 : 13/3 is what i am used to playing with

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1if the ratio of sides of similar shapes is: 1:k the ratio of their ares is: 1:k^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So it is 13/3, I got have of it right. Then it must be 13/3 and 16/9

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Or are you saying I got it right??

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1you got it right; 13/3 and 13^2/3^2 is fine

amistre64
 one year ago
Best ResponseYou've already chosen the best response.113^2 = 169 3^2 = 9 just make sure your notation is accurate to your course.

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1going from large to small might mean: 3/13 and 9/169
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