What is the total surface area of the right regular pyramid with a square base?

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

With number 11 ( show how you got the answer)