Please help!! will give 15 points !!

1) the missing leg length A&B represent leg length and see represents the length of the hypotenuse if necessary round to the nearest tenth.

2)a 10 feet long slide is attached to deck that is 5 feet high find the distance from the bottom of the deck to the bottom of the slide to the nearest tenth.

(please show your steps in 1 and 2, thank you soo much)

3)a diver swims 20 M underwater to the anchor of a buoy that is 10 M below the surface of the water on the surface. how far is the buoy located from the place where the diver started? round to the nearest meter.

4) the top of a badminton net is 5 feet high ropes connected the top of each Pole to stakes in the ground the ropes are 8.25 feet long, which is the closest to the distance from a steak to the base of a pole?

A) 4ft B) 7ft C) 9ft D)15 ft