Dalila is incorrect. The whisker on the left is very long, going all the way out to 5. The whisker goes from 5 to 30, so it has a spread of 25. The rest of the box plot values are closer together, so 5 is an outlier.
If you're trying to find the missing side of the "triangle" (the distance from the house to where the ladder touches the ground), you would use the pythagorean theorem, a²+b²=c². (c is always hypotenuse)
