Answer:
C
Step-by-step explanation:
Given
V = πr²h
Isolate h by dividing both sides by πr²
= h → C
x = 5.5 (Fraction 5 and one-half)
18 - 7x = -20.5
-18 -18
-7x = -38.5
/-7 /-7
x = 5.5
did you figure it out?