Answer:
D) 24.5
Step-by-step explanation:
use the pythagorean theorem.

Plug in the values. 
a+ 625 = 1225
then solve for a by subtracting 625 from 1225 = 600
√600= 24.5
The answer is C. i know because i looked it up
Answer:
t=√d-12/4 and t=√-d-12/4, d≥12
Step-by-step explanation:
Hope this helps.
Can you write the full sentence?..