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

Answer 1

@welshfella

Answer 2

@Michele_Laino

Answer 3

we have to find the apothem of you octagon

Answer 4

im not really sure on how to do that

Answer 5

in order to that, we can write:
\[\Large apothem = \sqrt {{6^2} - {{\left( {5/2} \right)}^2}} = \sqrt {36 - \frac{{25}}{4}} = ...?\]

I have applied the theorem of Pitagora