I need help with this... anyone ? See picture

Question 9
1 pts
Find the area of the regular octagon (8 sides) with apothem = 9.
O 195.6
O 1564.4
0 33.6
0 268.4

Which statement is true about the function f(x)= square root -x ? the domain of the graph is all real numbers. the range of the graph is all real numbers. the domain of the graph is all real numbers less than or equal to 0. the range of the graph is all real numbers less than or equal to 0.