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

(2+2√2)a^2 where a is a side. (2+2√2)16.35in^2 choose rounding

Answer 2

Im so confused,

Answer 3

@VickyTheMathlete , you there. How do I use that formula

Answer 4

do ( two plus (2 times the square root of two)) then multiply it by the length of one side of the octagon squared.

Answer 5

80.58?

Answer 6

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