A regular octagon has side length 10.9 in. The perimeter of the octagon is 87.2 in and the area is 392.4 in2. A second octagon has side lengths equal to 16.35 in. Find the area of the second octagon.

Question

kiwibyrd · Answer

I calculated this several different ways and none of my answers matched the ones I have to choose from.

ijlal · Answer

@kiwibyrd  can you please share the answer choices? 
i got my answer to be 1290.5 inches square

kiwibyrd · Answer

That's what I got too... the possible answers are

A. 461.60 in2
		
B. 882.9 in2
		
C. 717.06 in2
		
D. 642.66 in2

kiwibyrd · Answer

@ijlal any breakthroughs?

ijlal · Answer

let me try again a moment pls !

ijlal · Answer

@kiwibyrd  okay i finally figured it out may not be correct but i can provide an explanation

kiwibyrd · Answer

@ijlal  lets hear it

ijlal · Answer

ahh sorry this lagg :/ well here it is
I think they require and approximation as you might have not learned the formula of the area of a octagon so here it goes if you have studied congruence and similarity of similar object's there is a formula 
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