a rectangular compound has the dimensions 6 m by 10 m a square carpet is laid in the centre of the compound. Thr carpet is 3 m by 3 m. find the part of the compound that is uncovered by the carpet

This question awards 100 ! i really don’t want to fail i will also mark you !

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes

How can i differentiate this equation?