How can you prove a triangle is a right triangle?

Can you answer my question? will mark brainiest!

Avegetable garden and a surrounding path are shaped like a square together are 12 ft wide. the path is 1 feet wide. if one bag of gravel covers 8 square feet, how manu bags are needed to cover the path? round your answers to the nearest tenth.

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships