Ithought of a two-digit number. the digits of my number are different. the unit digit of my number is the tens digit raised to the third power. what is my number?

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?