We have your data Raised:


Now, well, to calculate the leg of a right triangle we must take its formula, which is the following:

Once taking into account the formula we take the data that would be as follows:

Now, what you have to do is the following, you can multiply it or you can also square it, in this case, I will multiply it.

Since, multiplying 7 twice gives 49 and if multiplying 10 twice gives 100, then, now we must add.

Adding
gives the result of
.

The square root must be taken since as we can see that 149 can be taken by its half
Half of
, so therefore our result of the right triangle is
.
[Graphic is attached]