Guys why is half of it black on snap did somebody hack my account?

Whats the name of the vertical axis

Acylinder has volume 45π and radius 3. what is it’s height?

Given the numbers c = –3 and d = 4, which statement is true? a. |–c| = 3 and |–d| = –4 b. |–c| = 3 and –|d| = –4 c. –|c| = –4 and –|d| = 3 d. |–c| = 3 and –|d| = 4