Answer:
Step-by-step explanation:
Pythagorean Theorem:
In this case, a = 9, b = a, and c = 15.
The, we subtract 81 from both sides getting:
,
Then,
Answer:
A.
Step-by-step explanation:
Try finding it in this https://www.uplifteducation.org/cms/lib01/TX01001293/Centricity/Domain/273/ENERGY%20CLIMATE%20PROBLEMS-SOL.pdf