what is the perimeter? if necessary, round to the nearest tenth. feet

Answer:

132.0

Explanation:

Step1: Find the hypotenuse c

Use Pythagorean theorem $c=\sqrt{28^{2}+45^{2}}$. $c=\sqrt{784 + 2025}=\sqrt{2809}=53$.

Step2: Calculate the perimeter

Perimeter $P=28 + 45+53$. $P = 126+6 = 132.0$ (rounded to nearest tenth).