For 24 keep the orders of operation in mind. So first we'd work out what's in parentheses, so we'd start by doing 5-3, which is 2. We'd then add 2+2 to get 4. Then we multiply 16 and 4 to get 64. So the correct answer is 64.
For the second part of 24 we first multiply 3 and 4 to get 9. We would then subtract 17-9 to get 8. Finally, we'd add 8+2 to get 10. So the correct answer is 10.
As for 25, the answer is 6400 centimeters^3.