If it has a line under the 9, then it needs to be 5.49, but if it has a line under the 4 it needs to be rounded up to 5.5 since the number behind it is above 5.
If you had the hypotenuse and one of the legs you could subtract the to using Pythagorean theorem. you cant answer the question unless you have another leg or a degree or a right triangle. <span />
