A tent is created by a triangular prism. The triangle at the front/back of the tent is 9 ft at its base, 6 ft tall, and the diagonal sides are 7.5 ft. The depth of the tent is 13 ft. To maintain the warmth of the tent in the cold of the mountain nights the campers purchased a device that will pump warm air into the tent. It can maintain a temperature of 68 degrees for 8 hours for a volume of 325 cubic feet. They also need to coat the interior surfaces with a substance that will repel insects including mosquitoes. The spray covers 50 square feet of surface per can.