The Pythagorean Triple is A squared + B Squared = C Squared. It uses perfect square numbers to satisfy this.
Question: You're locked out of your house and the only open window is on the second floor, 25ft above the ground. You need to borrow a ladder from one of your neighbours. There's a bush along side the edge of the house, so you'll have to place the ladder 10ft from the house. What length of ladder do you need to reach the window?