If 12% is 3,600 what is 100%

Is the orthocenter of a triangle on the inside ?

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

Can you me find the missing length. i attached an image.