What is the formula to find the volume in a rectangular ​

Arectangular prism is 3 meters long, 6 meters wide, and has a height of 9 meters. what is its surface area?

What is the equation of the graph below? y=sec(x)-4

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.