Answer:
1. True
2. True
3. True
4. True
5. True
Step-by-step explanation:
I dont know of it is supposed to be true or not lol.
Volume = 1/3 pi r^2 h
= 1/3 * 10^2 *81 pi
= 2700 pi units^3
Its C
-4
Step-by-step explanation:
-4z² + z²
let's assume you have z² and you're owing 4z², you'll pay the z² you have and you'll still owe 4
so that is -4