Which of the steps will cause the rectangle to map onto itself

Answer question above and explain each step : )

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?