What is the length in centimeters??

10 centimeters

Step-by-step explanation:

to find the answer for this question, we have to use the Pythagorean theorem. which is  

we consider both of the leg as a and b, and c as the hypotenuse.

in this question, we can say a is 24 and c is 26, we have to find b.

now plug in the number:

24² + b² = 26²

576 + b² = 676 subtract 576 from both side

b² = 100 Square root both side

b = √100

b = 10

5x+10 is the correct one

hope this