The question is what to do about the roof and the floor. Does the roof get painted or not? Does he need to include paint for the floor which we cannot see?
I will assume no to the roof and no for the floor. That's arbitary. Lateral Area is the perimeter of the base * height.
Solution
<em><u>Front and Back</u></em>
Area of the Front and Back is 8*14. Since there are 2 it is 2 * 8 * 14 = 224