Your neighbor's are building a dog pen in the shape of a right triangle. The legs of the triangular pen measures 9 meters and 12 meters. Find the perimeter of the enclosed space
Use the Pythagorean Theorem. If you find the sum of the two legs squared (81+144), you get 225. Take the square root and you get 15. Now add 9+12+15. The perimeter is the sum: 36.
