Geraldo is going to paint the interor walls of the lobby of the local history museum. the room is 40 ft by 60 ft. its height is 16 ft. in order to purchase the right amount of paint, geraldo must calculate the lateral surface area of the room. what is rhe lateral surface area?

Since the dimensions are 40 ft by 60 ft, and 16 ft high, I assume the floor of the room is shaped like a rectangle.
Each wall is a rectangle. Two walls measure 40 ft by 16 ft, and two walls measure 60 ft by 16 ft.

lateral area = 40 ft * 16 ft * 2 + 60 ft * 16 ft * 2

lateral area = 1280 ft^2 + 1920 ft^2

lateral area = 3200 ft^2