The vertices of a campsite are (25,15), (25,30), (55,30), and (55,15). The vertices of your tent are (30,20), (30,25), (40,25), and (40,20). The coordinates are measured in feet. What is the area of the campsite not covered by your tent?

The area of the campsite not covered by the tent is 400 feet².

The area of the campsite: 450 feet²

The area of your tent: 50 feet²

Area of the campsite - Area of your tent = Are of the campsite not covered by the tent.

450-50 = 400 feet²

(Area is always in square units)