Answer:
the total area of the octagon is 8(20.3 in²), or 162.4 in²
Explanation:
A regular octagon has 8 pie-shaped sections. Each is triangle of height 7 in and base 5.8 in.
Thus, the area of each such section is, by A = (1/2)(b)(h(),
A = (1/2)(5.8 in)(7 in) = 20.3 in².
There are 8 such sections.
Thus, the total area of the octagon is 8(20.3 in²), or 162.4 in²