Alrighty, so, without the picture and the clues given I'm going to assume the image you have looks like two angles coming from the middle of a straight line. A straight line is equal to 180 degrees. 180 degrees minus 168 degrees equals 12.
The answer to the equation is approximately 536.91
we don't know what the value of "X" is, so therefore, we cannot conclude that it is 15 cm.
Speed = distance ÷ time so it's probably
35÷120=0.291 or 7/24 miles per hour
