3. Calculate angles A, B and C on the truss. 10 34°

Please answer fully and on paper I keep getting the wrong answer when submitting questions so please double check. Thanks a ton ill make sure to thumbs up multiple times.

A certain driving test requires the driver to stop with the front wheel of the vehicle inside a rectangular box drawn on the pavement. The box is 80 inches long and has a width that is 29 inches less than the length. Find the perimeter and area of the box.

Please describe the answers step by step since it is difficult to figure it out since the answers are cut off.