THIS IS A TWO PART QUESTION BUT ONE IF ALREADY ANSWERED ( keep in mind that i said answered, not correct. ) PART ONE
When finding the volume of a right cylinder, which formula is equivalent to V = Bh
A) V = πd^2
B) V = 2πrh
C) V = π^2r
D) V = πr^2h (my answer)

PART TWO
The radius of the base of a right cylinder is 12 cm, and the height of the cylinder is 18 cm. In terms of π, what is the volume of the cylinder?

A) 216π cm3
B) 1,438π cm3
C) 2,592π cm3
C) 3,888π cm3

Which system of linear inequalities is represented by the graph? + l tv x-3y > 6 and y > 2x o x + 3y > 6 and y o x-3y > 6 and y> 2x o x + 3y > 6 and y > 2x + 4 la +

Find the value of x. give reasons to justify your solutions! c ∈ ae

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.