gracebugj10 gracebugj10

11-04-2022
Mathematics

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please help if you can xx

please help if you can xx class=

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Аноним Аноним

11-04-2022

Answer:

Below in bold.

Step-by-step explanation:

The angle in a regular octagon = 180 - (360/8) = 135.

Using trigonometry sin (135/2) = k/2 / EF

sin 67.5 = k / 2EF

2EF = k / sin 67.5

EF = k / 2 sin 67.5 = k/1.8478

Perimeter of octagon = 8 * k/1.8478

= 4.33k to the nearest hundredth.

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