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

Explanation:

Step1: Find the hypotenuse c using Pythagorean theorem

By the Pythagorean theorem $c=\sqrt{4^{2}+5^{2}}=\sqrt{16 + 25}=\sqrt{41}\approx6.4$

Step2: Calculate the perimeter P

$P=4 + 5+6.4=15.4$

Answer:

$15.4$