Yes because when your multiply every thing together you’ll have 9/15 miles
I'm assuming you mean triangle angles?
If so, all angles add up to 180 so combine them and set them equal to 180.
51+82+5x+2=180
135+5x=180
5x=45
x=9
Area of square = a^2 = 4^2 = 4 x 4 = 16
answer
16
