Ineed to know how long my shadow would be. i'm 5''

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap