I need to find cos^-1 (1/2)

You are looking at two area rugs for your bedroom. one is a square with side lengths of 6.3 feet. the other is a rectangle that is 4.8 feet by 8.2 feet. which rug will cover the greatest area? how much more area will it cover? with work plzz and u so much

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

[15 points, algebra 2]simplify the complex fraction and find the restrictions.