Question

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.

Answer 1

Formula for a octagon:
$2(1+ \sqrt{2} ) a^{2}$
a = 16.35
$2(1+ \sqrt{2} ) 16.35^{2} =1290.75$
Area = 1290.75