Mathematics Question and Solution

By Ogheneovo Daniel Ephivbotor
26th September, 2024

Calculating inscribed shaded area green.


a = ⅛*180(8-2)

a = ¼*180*3

a = 135°

a is the single interior angle of the regular octagon.


2b² = 4²

b² = 8

b = 2√(2) units.


c = 2b

c = 4√(2)units.


Therefore, green inscribed area is;


Area triangle with height 4√(2) units and base 4√(2)sin45 units - Area triangle with height and base 2√(2) units respectively.


= (½*4√(2)*4√(2)sin45)-(½*2√(2)*2√(2))

= 8√(2)-4

= 4(2√(2)-1) square units.

= 7.313708499 square units.

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