Question

please help, i’m confused

Answer 1

Answer:

The way the Pythagorean theorem can be used to find the side length of DE is if you find the side length of the other two side you can use the formula $a^2+b^2=c^2$. The side length of DE is 13.

Step-by-step explanation:

One of the side lengths is 5 and the other is 12.

Use $a^2+b^2=c^2$

$5^2+12^2=c^2$ equals:

$25+144=c^2$ equals:

$169=c^2$ equals:

$\sqrt{169} = c$ equals:

$13=c$

13= DE