which streach could rayan buy

Question

Ryan is putting a clothesline in his rectangular backyard. He wants to put it between two trees on the edge of his property. He has measured his property, and made the sketch shown below, where all the lengths listed are in meters.
What is the smallest length of rope that Ryan could buy which would stretch from one tree to the other?

Answer 1

Assuming the 25 is the length from the upper right corner to the tree, draw a line from the tree on the left perpendicular to the edge of the yard on the right. You have a right triangle with legs of 15 and 20.

 

You can take it from there!