Find the Area

What is the area of a rectangle that has a length of 6 kilometers and a width of 4 kilometers? 22 square kilometers 24 square kilometers 32 square kilometers 12 square kilometers What is the area of a rectangle with a length of 6 centimeters and a width of 3 centimeters? 18 square centimeters What is the area of a rectangle with a length of 6 meters and a width of 5 meters? 30 square meters What is the area of a rectangle with a width of 1 kilometer and a length of 7 kilometers? 14 square kilometers 12 square kilometers 21 square kilometers 7 square kilometers What is the area of a square that has a side that measures 12 centimeters? 12 square centimeters 24 square centimeters 144 square centimeters 240 square centimeters