What is the area of the regular octagon below?

A)114.5 m^2
B)229.1 m^2
C)391.1 m^2
D)458.2 m^2

The area of the regular octagon is 229.1 , which is mentioned in option B, if the radius of the octagon is 9 meters.

Step-by-step explanation:

The given is,

                  Radius of the Octagon is 9 m

Step:1

                  Formula for are of regular rectangle is,

                            × ........................(1)

                  Where,

                          r - Radius of Octagon

Step:2

                 From the given values,  

                            r = 9 meter                                    (∵ From given Figure)

                  Equation (1) becomes,

                              = 2 × ×

                              = 2 × × 81

                              = 229.10

                           a  = 229.10

Result:

          The area of the regular octagon is 229.1 ,which is mentioned in option B, if the radius of the octagon is 9 meters.

x=4

step-by-step explanation:

answer: f = 32.2m

step-by-step explanation: that is the answer