Question

An Octagon has the radius of 56 and an area of 10,391.9 square millimeters.

Answer 1

Answer:

Step-by-step explanation:

Alright, lets get started.

The area of octagon is given $= 10391.9$

The formula for area of octagon with side a is = $2(1+\sqrt{2} )a^2$

$10391.9 = 2(1+\sqrt{2} )a^2$

hence ,

$a^2 = \frac{10391.9}{2(1+\sqrt{2} )}$

$a^2 = 2152.2329$

$a = 46.39$

Hence the length of the side of the octagon is 46    :   Answer

Now perimeter of the octagon will be = $8*side length$

Hence the perimeter = $8*46.39 =371.1$

hence the perimeter of the octagon is 371   :   Answer

Hope it will help :)

Answer 2

A.371
b.46 
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