Aregular octagon with sides of length 7 and an apothem of length 10.49 has an area of how many square units

Which of the following is the shape of a cross section of the figure shown below

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189