What Did The Wall Say To The Bookcase?

What’s the answer ? use the picture to see the problem

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?

What is the perimeter of an equilateral triangle if each side is (x+3)?