Multiply what to simply the square root of what. No work can be shown unless there is a problem given.
The answer to your question is 3 3/4.. i hope its right.
An easy way to test this is with the equation
this means that if you add 4.8²+6.4² does it equal 8²? if so then it is a right triangle. This is called the<span> Pythagorean theorem. So the answer is, yes it is a right triangle. </span>