Arectangular lawn is 48 feet long and 61 feet wide. a path extends diagonally between 2 of the corners of the lawn, what is the length of the path to the nearest 10th of a foot?

This is a question that will require Pythagoras' theorem as you want to find the length of a diagonal of a triangle and are given the measurements of two sides. I have attached a picture of how to solve this problem.
To the nearest 10th of a foot, the answer is 77.6ft