Octagon

We have a square with side 84 cm. We cut the corners to make his octagon. What will be the side of the octagon?

Result

x =  34.8 cm

Solution:

x=2842+2=34.8  cm x = \dfrac{ \sqrt{2} \cdot 84 }{ 2 + \sqrt{ 2 }} = 34.8 \ \text{ cm }



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