25+ points for best two answers!
1. what is the surface area of the right trapezoidal prism?
[see attachment]
a. 130 cm²
b. 114.5 cm²
c. 48.5 cm²
d. 98.5 cm²
2. the four walls of a room are going to be wallpapered. the room is shaped like a rectangular prism, and its length, width, and height are 20 ft, 18 ft, and 9 ft, respectively.
how much wallpaper is needed to complete the job?
[see second attachment]
a. 684 ft²
b. 342 ft²
c. 1080 ft²
d. 796 ft²