To solve these questions using the Pythagorean theorem and the provided answer choices, let's go step-by-step.

---

1. Length of TU

Given the problem states a right triangle with legs of $175$ m and $79$ m, and instructs us to "subtract," this implies we are solving for the difference in hypotenuse lengths in some form. However, the traditional Pythagorean theorem involves adding squares to calculate the hypotenuse or subtracting squares to find a missing leg.

We calculate the hypotenuse:

$c = \sqrt{175^2 + 79^2}$

$c = \sqrt{30625 + 6241} = \sqrt{36866} \approx 192.01$

Matching to the closest value in the answer choices, $\boxed{H - 202.86}$.

---

2. Area of the Rectangle

Using the rounded answer from 1 ($H = 202.86$) as one dimension of the rectangle and another unspecified dimension $b$, the area is:

[ \text{Area} = \text{Base} \times \text{Height}.