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SFAdrienne
Group Title
The area of a regular octagon is 35cm^2. What is the area of a regular octagon with sides eight times as long?
 one year ago
 one year ago
SFAdrienne Group Title
The area of a regular octagon is 35cm^2. What is the area of a regular octagon with sides eight times as long?
 one year ago
 one year ago

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RyanL. Group TitleBest ResponseYou've already chosen the best response.0
how did you get 35cm^2 or was that given to you?
 one year ago

SFAdrienne Group TitleBest ResponseYou've already chosen the best response.0
It was given, yes.
 one year ago

Directrix Group TitleBest ResponseYou've already chosen the best response.2
These two regular octagons are similar. So, the theorem we used on the previous problem holds here. The square of the scale factor of two similar polygons is equal to the ratio of their areas.
 one year ago

Directrix Group TitleBest ResponseYou've already chosen the best response.2
In words, the proportion is: the square of (one is to eight) = 35 to x where x is the area of the octagon that has sides of length 8 times the sides of the smaller octagon.
 one year ago

Directrix Group TitleBest ResponseYou've already chosen the best response.2
dw:1359360295510:dw @SFAdrienne
 one year ago

SFAdrienne Group TitleBest ResponseYou've already chosen the best response.0
One second, I'll try to solve.
 one year ago

SFAdrienne Group TitleBest ResponseYou've already chosen the best response.0
x = 2240. ?
 one year ago

Directrix Group TitleBest ResponseYou've already chosen the best response.2
yes. 2240 square cm. for the area of the larger octagon.
 one year ago

SFAdrienne Group TitleBest ResponseYou've already chosen the best response.0
Great. Thanks. :)
 one year ago

Directrix Group TitleBest ResponseYou've already chosen the best response.2
Glad to help.
 one year ago
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