Quadrilateral abcd abcd is similar to quadrilateral efgh efgh. the lengths of the three longest sides in quadrilateral abcd abcd are 20 feet, 18 feet, and 14 feet long. if the two shortest sides of quadrilateral efgh efgh are 6 feet long and 5 feet long, how long is the 4th side on quadrilateral abcd a: 13 ft b: 6.4ft c: 9.2ft d: 11.7

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?