Your teacher has asked you to write a small lesson on finding the area of a regular octagon. She gives you the following diagram and asks you to use this diagram in your lesson as an example.

@pooja @somy

Question

Your teacher has asked you to write a small lesson on finding the area of a regular octagon. She gives you the following diagram and asks you to use this diagram in your lesson as an example.

@pooja @somy

18jonea · Answer

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18jonea · Answer

@welshfella

18jonea · Answer

@Michele_Laino

michele_laino · Answer

we have to find the apothem of you octagon

18jonea · Answer

im not really sure on how to do that

michele_laino · Answer

in order to that, we can write:
$$\Large apothem = \sqrt {{6^2} - {{\left( {5/2} \right)}^2}}  = \sqrt {36 - \frac{{25}}{4}}  = ...?$$
|dw:1429722504337:dw|
I have applied the theorem of Pitagora