Octagon Area

Geometry Level 2

What is the area of an octagon with longest diagonal measuring 12 units?


The answer is 101.823.

Riley Gallagher-Long by Riley Gallagher-Long , 23, Australia

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1 solution

A = 8 ( 1 2 ) ( 6 2 ) ( sin ⁡ 45 ) ≈ 101.823 A=8\left(\dfrac{1}{2}\right)(6^2)(\sin 45) \approx 101.823 .

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