Geometry

The answer is C. 26.

 

1. Since , their lengths are equal:

Set up the equation .

Add  to both sides of the equation:

, which simplifies to .

 

Add 7 to both sides of the equation:

, resulting in .

 

Divide both sides by 7:

, so .

 

2. Now find the lengths of  and :

For , substitute  into the expression

Click "Show Answer" to reveal the answer and analysis