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ErinWeeks
Group Title
The area of a regular octagon is 35 cm2. What is the area of a regular octagon with sides five times as long?
A. 625 cm2
B. 875 cm2
C. 175 cm2
D. 245 cm2
 one year ago
 one year ago
ErinWeeks Group Title
The area of a regular octagon is 35 cm2. What is the area of a regular octagon with sides five times as long? A. 625 cm2 B. 875 cm2 C. 175 cm2 D. 245 cm2
 one year ago
 one year ago

This Question is Closed

Hero Group TitleBest ResponseYou've already chosen the best response.1
Do you have the formulas for Area of a Polygon already?
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
no i dont ! could you tell me the area
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
\[A = \frac{Pa}{2}\]
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
what is PA? what would i put there?
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Hint: Area of similar polygons are proportional to the square of the linear dimensions (such as a side). A polygon with a side 5 times as long has an area of 5^2=25 times the smaller polygon.
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
^What he said
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
so it would be B , 875 ?
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Sounds good to me. :)
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
I was just about to show her the long hard way of doing it.
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
Nice intercept @mathmate
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
thank you both !!
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Sorry @Hero for butting in. I think the question was on the proportionality of figures.
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
It was on Area of a Regular Polygon as well
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
It would definitely been beneficial to learn how to calculate the apothem and the length of the side given the area and number of sides. It would be a little long though.
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
Yes, I know. I just said that it was the long way. Good job on saving time.
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Sorry pal for this time. Hope that won't happen again! :)
 one year ago
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